99d46a23c6eac800f327b29f8009f7d7da986230trawick

5b03ba47ff7225cacb131f14b019332af27da960gstein#define CORE_PRIVATE

5b03ba47ff7225cacb131f14b019332af27da960gstein

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "apr_portable.h"

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "httpd.h"

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "http_main.h"

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "http_log.h"

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "http_config.h" /* for read_config */

5b03ba47ff7225cacb131f14b019332af27da960gstein#include "http_core.h" /* for get_remote_host */

e8f95a682820a599fe41b22977010636be5c2717jim#include "http_connection.h"

e8f95a682820a599fe41b22977010636be5c2717jim#include "ap_mpm.h"

98e9c4a310bb623ff788680f88b6bd200ff36a24wrowe#include "unixd.h"

f4c310fd2555c6faca1f980f00b161eadb089023gstein#include "iol_socket.h"

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm#include "ap_listen.h"

f4c310fd2555c6faca1f980f00b161eadb089023gstein#include "scoreboard.h"

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein#include <netinet/tcp.h>

f4c310fd2555c6faca1f980f00b161eadb089023gstein#include <pthread.h>

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein

691db92094897494d6c31326108da20088bc175etrawickint ap_threads_per_child=0; /* Worker threads per child */

691db92094897494d6c31326108da20088bc175etrawickint ap_max_requests_per_child=0;

691db92094897494d6c31326108da20088bc175etrawickstatic char *ap_pid_fname=NULL;

691db92094897494d6c31326108da20088bc175etrawickstatic char *ap_scoreboard_fname=NULL;

691db92094897494d6c31326108da20088bc175etrawickstatic int ap_daemons_to_start=0;

691db92094897494d6c31326108da20088bc175etrawickstatic int min_spare_threads=0;

691db92094897494d6c31326108da20088bc175etrawickstatic int max_spare_threads=0;

691db92094897494d6c31326108da20088bc175etrawickstatic int ap_daemons_limit=0;

691db92094897494d6c31326108da20088bc175etrawickstatic time_t ap_restart_time=0;

691db92094897494d6c31326108da20088bc175etrawickAPI_VAR_EXPORT int ap_extended_status = 0;

691db92094897494d6c31326108da20088bc175etrawickstatic int workers_may_exit = 0;

691db92094897494d6c31326108da20088bc175etrawickstatic int requests_this_child;

691db92094897494d6c31326108da20088bc175etrawickstatic int num_listensocks = 0;

691db92094897494d6c31326108da20088bc175etrawickstatic ap_socket_t **listensocks;

691db92094897494d6c31326108da20088bc175etrawick

691db92094897494d6c31326108da20088bc175etrawicktypedef struct {

691db92094897494d6c31326108da20088bc175etrawick int pid;

691db92094897494d6c31326108da20088bc175etrawick int tid;

691db92094897494d6c31326108da20088bc175etrawick int sd;

691db92094897494d6c31326108da20088bc175etrawick ap_context_t *tpool; /* "pthread" would be confusing */

691db92094897494d6c31326108da20088bc175etrawick} proc_info;

691db92094897494d6c31326108da20088bc175etrawick

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic int max_daemons_limit = -1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic char ap_coredump_dir[MAX_STRING_LEN];

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int pipe_of_death[2];

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic pthread_mutex_t pipe_of_death_mutex;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic server_rec *server_conf;

e8f95a682820a599fe41b22977010636be5c2717jim

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int one_process = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef DEBUG_SIGSTOP

6f15570e3adc0faf87bf55f70857028276fc9e32wroweint raise_sigstop_flags;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef HAS_OTHER_CHILD

f4c310fd2555c6faca1f980f00b161eadb089023gsteintypedef struct other_child_rec other_child_rec;

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstruct other_child_rec {

e8f95a682820a599fe41b22977010636be5c2717jim other_child_rec *next;

98e9c4a310bb623ff788680f88b6bd200ff36a24wrowe int pid;

f4c310fd2555c6faca1f980f00b161eadb089023gstein void (*maintenance) (int, void *, ap_wait_t);

f4c310fd2555c6faca1f980f00b161eadb089023gstein void *data;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int write_fd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein};

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic other_child_rec *other_children;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

e8f95a682820a599fe41b22977010636be5c2717jim

98e9c4a310bb623ff788680f88b6bd200ff36a24wrowestatic ap_context_t *pconf; /* Pool for config stuff */

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic ap_context_t *pchild; /* Pool for httpd child stuff */

58fd79b56eb624bf011772994e9761d3c2e228c1orlikowski

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic int my_pid; /* Linux getpid() doesn't work except in main thread. Use

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic int worker_thread_count;

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic pthread_mutex_t worker_thread_count_mutex;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

e8f95a682820a599fe41b22977010636be5c2717jimstatic pthread_mutex_t thread_accept_mutex = PTHREAD_MUTEX_INITIALIZER;

98e9c4a310bb623ff788680f88b6bd200ff36a24wrowestatic ap_lock_t *process_accept_mutex;

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic char *lock_fname;

58fd79b56eb624bf011772994e9761d3c2e228c1orlikowski

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef NO_SERIALIZED_ACCEPT

f4c310fd2555c6faca1f980f00b161eadb089023gstein#define SAFE_ACCEPT(stmt) APR_SUCCESS

f4c310fd2555c6faca1f980f00b161eadb089023gstein#else

f4c310fd2555c6faca1f980f00b161eadb089023gstein#define SAFE_ACCEPT(stmt) (stmt)

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein

e8f95a682820a599fe41b22977010636be5c2717jim

98e9c4a310bb623ff788680f88b6bd200ff36a24wroweenum server_token_type ap_server_tokens = SrvTk_FULL;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinAPI_EXPORT(const server_rec *) ap_get_server_conf(void)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein return (server_conf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinAPI_EXPORT(int) ap_get_max_daemons(void)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein return max_daemons_limit;

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinvoid clean_child_exit(int code)

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz{

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz if (pchild) {

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz ap_destroy_pool(pchild);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein exit(code);

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

91644a5f4d3e992dc208304b50e80bbb236fca89trawick

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef HAS_OTHER_CHILD

8b99f2a316c5e2fa6ab208206fdd7fc2bfc4a921dougmAPI_EXPORT(void) ap_register_other_child(int pid,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe void (*maintenance) (int reason, void *, ap_wait_t status),

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe void *data, int write_fd)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

f4c310fd2555c6faca1f980f00b161eadb089023gstein other_child_rec *ocr;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein ocr = ap_palloc(pconf, sizeof(*ocr));

48f35e10f195dd594d75738fc536bb885eda537cgstein ocr->pid = pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ocr->maintenance = maintenance;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ocr->data = data;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ocr->write_fd = write_fd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein ocr->next = other_children;

f4c310fd2555c6faca1f980f00b161eadb089023gstein other_children = ocr;

48f35e10f195dd594d75738fc536bb885eda537cgstein}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

6f15570e3adc0faf87bf55f70857028276fc9e32wroweAPI_EXPORT(void) ap_unregister_other_child(void *data)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein other_child_rec **pocr, *nocr;

48f35e10f195dd594d75738fc536bb885eda537cgstein

48f35e10f195dd594d75738fc536bb885eda537cgstein for (pocr = &other_children; *pocr; pocr = &(*pocr)->next) {

48f35e10f195dd594d75738fc536bb885eda537cgstein if ((*pocr)->data == data) {

48f35e10f195dd594d75738fc536bb885eda537cgstein nocr = (*pocr)->next;

48f35e10f195dd594d75738fc536bb885eda537cgstein (*(*pocr)->maintenance) (OC_REASON_UNREGISTER, (*pocr)->data, -1);

48f35e10f195dd594d75738fc536bb885eda537cgstein *pocr = nocr;

48f35e10f195dd594d75738fc536bb885eda537cgstein /* XXX: um, well we've just wasted some space in pconf ? */

48f35e10f195dd594d75738fc536bb885eda537cgstein return;

48f35e10f195dd594d75738fc536bb885eda537cgstein }

48f35e10f195dd594d75738fc536bb885eda537cgstein }

48f35e10f195dd594d75738fc536bb885eda537cgstein}

48f35e10f195dd594d75738fc536bb885eda537cgstein

48f35e10f195dd594d75738fc536bb885eda537cgsteinstatic void probe_writable_fds(void)

48f35e10f195dd594d75738fc536bb885eda537cgstein{

48f35e10f195dd594d75738fc536bb885eda537cgstein return;

24efed0910118b762a4eb84830875d4714b8d315ianh#if 0

48f35e10f195dd594d75738fc536bb885eda537cgstein fd_set writable_fds;

48f35e10f195dd594d75738fc536bb885eda537cgstein int fd_max;

48f35e10f195dd594d75738fc536bb885eda537cgstein other_child_rec *ocr, *nocr;

48f35e10f195dd594d75738fc536bb885eda537cgstein struct timeval tv;

c1b808d160bfb5c849263be8d4acff600853a328trawick int rc;

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein if (other_children == NULL)

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein return;

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein fd_max = 0;

48f35e10f195dd594d75738fc536bb885eda537cgstein FD_ZERO(&writable_fds);

48f35e10f195dd594d75738fc536bb885eda537cgstein do {

48f35e10f195dd594d75738fc536bb885eda537cgstein for (ocr = other_children; ocr; ocr = ocr->next) {

48f35e10f195dd594d75738fc536bb885eda537cgstein if (ocr->write_fd == -1)

48f35e10f195dd594d75738fc536bb885eda537cgstein continue;

48f35e10f195dd594d75738fc536bb885eda537cgstein FD_SET(ocr->write_fd, &writable_fds);

48f35e10f195dd594d75738fc536bb885eda537cgstein if (ocr->write_fd > fd_max) {

48f35e10f195dd594d75738fc536bb885eda537cgstein fd_max = ocr->write_fd;

48f35e10f195dd594d75738fc536bb885eda537cgstein }

48f35e10f195dd594d75738fc536bb885eda537cgstein }

48f35e10f195dd594d75738fc536bb885eda537cgstein if (fd_max == 0)

48f35e10f195dd594d75738fc536bb885eda537cgstein return;

48f35e10f195dd594d75738fc536bb885eda537cgstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein tv.tv_sec = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein tv.tv_usec = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein rc = ap_select(fd_max + 1, NULL, &writable_fds, NULL, &tv);

e8f95a682820a599fe41b22977010636be5c2717jim } while (rc == -1 && errno == EINTR);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (rc == -1) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* XXX: uhh this could be really bad, we could have a bad file

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_unixerr("probe_writable_fds", "select",

f4c310fd2555c6faca1f980f00b161eadb089023gstein "could not probe writable fds", server_conf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein return;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (rc == 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein return;

48f35e10f195dd594d75738fc536bb885eda537cgstein

48f35e10f195dd594d75738fc536bb885eda537cgstein for (ocr = other_children; ocr; ocr = nocr) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe nocr = ocr->next;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (ocr->write_fd == -1)

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (FD_ISSET(ocr->write_fd, &writable_fds))

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein (*ocr->maintenance) (OC_REASON_UNWRITABLE, ocr->data, -1);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int reap_other_child(int pid, ap_wait_t status)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

f4c310fd2555c6faca1f980f00b161eadb089023gstein other_child_rec *ocr, *nocr;

77c2148c53e0a4a20a80af735caa4e0e6bd448e0gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein for (ocr = other_children; ocr; ocr = nocr) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein nocr = ocr->next;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (ocr->pid != pid)

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein ocr->pid = -1;

8b99f2a316c5e2fa6ab208206fdd7fc2bfc4a921dougm (*ocr->maintenance) (OC_REASON_DEATH, ocr->data, status);

f4c310fd2555c6faca1f980f00b161eadb089023gstein return 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein return -1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f958dac1550254a59b45f4655138bb34dad5e76egsteinstatic void reclaim_child_processes(int terminate)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein int i, status;

f4c310fd2555c6faca1f980f00b161eadb089023gstein long int waittime = 1024 * 16; /* in usecs */

f4c310fd2555c6faca1f980f00b161eadb089023gstein struct timeval tv;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int waitret, tries;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int not_dead_yet;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef HAS_OTHER_CHILD

f4c310fd2555c6faca1f980f00b161eadb089023gstein other_child_rec *ocr, *nocr;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz ap_sync_scoreboard_image();

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz

f4c310fd2555c6faca1f980f00b161eadb089023gstein for (tries = terminate ? 4 : 1; tries <= 9; ++tries) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* don't want to hold up progress any more than

f4c310fd2555c6faca1f980f00b161eadb089023gstein tv.tv_sec = waittime / 1000000;

f4c310fd2555c6faca1f980f00b161eadb089023gstein tv.tv_usec = waittime % 1000000;

e8f95a682820a599fe41b22977010636be5c2717jim waittime = waittime * 4;

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz ap_select(0, NULL, NULL, NULL, &tv);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

0946f90438dcf29a5fe5d9e21559b3b9d640bc12wrowe /* now see who is done */

f4c310fd2555c6faca1f980f00b161eadb089023gstein not_dead_yet = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein for (i = 0; i < max_daemons_limit; ++i) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int pid = ap_scoreboard_image->parent[i].pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (pid == my_pid || pid == 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f39230a531b23d94f86a087963299bbe2e431a4agstein waitret = waitpid(pid, &status, WNOHANG);

0946f90438dcf29a5fe5d9e21559b3b9d640bc12wrowe if (waitret == pid || waitret == -1) {

f39230a531b23d94f86a087963299bbe2e431a4agstein ap_scoreboard_image->parent[i].pid = 0;

f39230a531b23d94f86a087963299bbe2e431a4agstein continue;

f39230a531b23d94f86a087963299bbe2e431a4agstein }

0946f90438dcf29a5fe5d9e21559b3b9d640bc12wrowe ++not_dead_yet;

0946f90438dcf29a5fe5d9e21559b3b9d640bc12wrowe switch (tries) {

f39230a531b23d94f86a087963299bbe2e431a4agstein case 1: /* 16ms */

f39230a531b23d94f86a087963299bbe2e431a4agstein case 2: /* 82ms */

f39230a531b23d94f86a087963299bbe2e431a4agstein break;

1e2133fe37e6cbcd683233057ef62236bc8e5826trawick case 3: /* 344ms */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein case 4: /* 16ms */

f39230a531b23d94f86a087963299bbe2e431a4agstein case 5: /* 82ms */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein case 6: /* 344ms */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein case 7: /* 1.4sec */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein /* ok, now it's being annoying */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING,

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein 0, server_conf,

f39230a531b23d94f86a087963299bbe2e431a4agstein "child process %d still did not exit, sending a SIGTERM",

f39230a531b23d94f86a087963299bbe2e431a4agstein pid);

f39230a531b23d94f86a087963299bbe2e431a4agstein kill(pid, SIGTERM);

f39230a531b23d94f86a087963299bbe2e431a4agstein break;

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein case 8: /* 6 sec */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein /* die child scum */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, server_conf,

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein "child process %d still did not exit, sending a SIGKILL",

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein pid);

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein kill(pid, SIGKILL);

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein break;

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein case 9: /* 14 sec */

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein /* gave it our best shot, but alas... If this really

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, server_conf,

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein "could not make child process %d exit, "

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein "attempting to continue anyway", pid);

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein break;

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein#ifdef HAS_OTHER_CHILD

f39230a531b23d94f86a087963299bbe2e431a4agstein for (ocr = other_children; ocr; ocr = nocr) {

f39230a531b23d94f86a087963299bbe2e431a4agstein nocr = ocr->next;

f39230a531b23d94f86a087963299bbe2e431a4agstein if (ocr->pid == -1)

f39230a531b23d94f86a087963299bbe2e431a4agstein continue;

f39230a531b23d94f86a087963299bbe2e431a4agstein

f39230a531b23d94f86a087963299bbe2e431a4agstein waitret = waitpid(ocr->pid, &status, WNOHANG);

f39230a531b23d94f86a087963299bbe2e431a4agstein if (waitret == ocr->pid) {

f39230a531b23d94f86a087963299bbe2e431a4agstein ocr->pid = -1;

f39230a531b23d94f86a087963299bbe2e431a4agstein (*ocr->maintenance) (OC_REASON_DEATH, ocr->data, status);

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein else if (waitret == 0) {

f39230a531b23d94f86a087963299bbe2e431a4agstein (*ocr->maintenance) (OC_REASON_RESTART, ocr->data, -1);

f39230a531b23d94f86a087963299bbe2e431a4agstein ++not_dead_yet;

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein else if (waitret == -1) {

f39230a531b23d94f86a087963299bbe2e431a4agstein /* uh what the heck? they didn't call unregister? */

f39230a531b23d94f86a087963299bbe2e431a4agstein ocr->pid = -1;

f39230a531b23d94f86a087963299bbe2e431a4agstein (*ocr->maintenance) (OC_REASON_LOST, ocr->data, -1);

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein }

ab78b55c6dc4431d2c68d6bb4d169ba1554290a8gstein#endif

f39230a531b23d94f86a087963299bbe2e431a4agstein if (!not_dead_yet) {

f39230a531b23d94f86a087963299bbe2e431a4agstein /* nothing left to wait for */

f39230a531b23d94f86a087963299bbe2e431a4agstein break;

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein }

f39230a531b23d94f86a087963299bbe2e431a4agstein}

f39230a531b23d94f86a087963299bbe2e431a4agstein

f39230a531b23d94f86a087963299bbe2e431a4agstein

f39230a531b23d94f86a087963299bbe2e431a4agstein#ifndef INTERVAL_OF_WRITABLE_PROBES

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein#define INTERVAL_OF_WRITABLE_PROBES 10

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein#endif

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic int wait_or_timeout_counter;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

6810bf1570bed88d16239b27ce47d48408bb2e51gsteinstatic int wait_or_timeout(ap_wait_t *status)

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein{

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein struct timeval tv;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein int ret;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein ++wait_or_timeout_counter;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein if (wait_or_timeout_counter == INTERVAL_OF_WRITABLE_PROBES) {

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein wait_or_timeout_counter = 0;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein#ifdef HAS_OTHER_CHILD

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein probe_writable_fds();

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein#endif

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein }

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein ret = waitpid(-1, status, WNOHANG);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein if (ret == -1 && errno == EINTR) {

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein return -1;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein }

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein if (ret > 0) {

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein return ret;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein }

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein tv.tv_sec = SCOREBOARD_MAINTENANCE_INTERVAL / 1000000;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein tv.tv_usec = SCOREBOARD_MAINTENANCE_INTERVAL % 1000000;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein ap_select(0, NULL, NULL, NULL, &tv);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein return -1;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein}

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic void sig_coredump(int sig)

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein{

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein chdir(ap_coredump_dir);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein signal(sig, SIG_DFL);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein kill(my_pid, sig);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein /* At this point we've got sig blocked, because we're still inside

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein}

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic void just_die(int sig)

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein{

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein clean_child_exit(0);

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein}

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic int volatile shutdown_pending;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic int volatile restart_pending;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinstatic int volatile is_graceful;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gsteinap_generation_t volatile ap_my_generation;

b5989e567e4fac5b3ab1252024ae19b0a54893a7gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinvoid ap_start_shutdown(void)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

0206c121a68a63559b2e843288e81bcf16093e46jerenkrantz if (shutdown_pending == 1) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* Um, is this _probably_ not an error, if the user has

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm return;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein shutdown_pending = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinvoid ap_start_restart(int graceful)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (restart_pending == 1) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* Probably not an error - don't bother reporting it */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe restart_pending = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe is_graceful = graceful;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void sig_term(int sig)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_start_shutdown();

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void restart(int sig)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifndef WIN32

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_start_restart(sig == SIGWINCH);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#else

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_start_restart(1);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic void set_signals(void)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifndef NO_USE_SIGACTION

f4c310fd2555c6faca1f980f00b161eadb089023gstein struct sigaction sa;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm sigemptyset(&sa.sa_mask);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe sa.sa_flags = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!one_process) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein sa.sa_handler = sig_coredump;

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm#if defined(SA_ONESHOT)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe sa.sa_flags = SA_ONESHOT;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#elif defined(SA_RESETHAND)

f4c310fd2555c6faca1f980f00b161eadb089023gstein sa.sa_flags = SA_RESETHAND;

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGSEGV, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGSEGV)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGBUS

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGBUS, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGBUS)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGABORT

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm if (sigaction(SIGABORT, &sa, NULL) < 0)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGABORT)");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifdef SIGABRT

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGABRT, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGABRT)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm#ifdef SIGILL

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGILL, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGILL)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

e8f95a682820a599fe41b22977010636be5c2717jim sa.sa_flags = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe sa.sa_handler = sig_term;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGTERM, &sa, NULL) < 0)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGTERM)");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifdef SIGINT

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton if (sigaction(SIGINT, &sa, NULL) < 0)

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGINT)");

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton#endif

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz#ifdef SIGXCPU

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton sa.sa_handler = SIG_DFL;

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz if (sigaction(SIGXCPU, &sa, NULL) < 0)

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGXCPU)");

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz#endif

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz#ifdef SIGXFSZ

5a8f3bcf803321e69b226d3b98314305a68a586cjerenkrantz sa.sa_handler = SIG_DFL;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (sigaction(SIGXFSZ, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGXFSZ)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifdef SIGPIPE

f4c310fd2555c6faca1f980f00b161eadb089023gstein sa.sa_handler = SIG_IGN;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGPIPE, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGPIPE)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* we want to ignore HUPs and WINCH while we're busy processing one */

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigaddset(&sa.sa_mask, SIGHUP);

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigaddset(&sa.sa_mask, SIGWINCH);

f4c310fd2555c6faca1f980f00b161eadb089023gstein sa.sa_handler = restart;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGHUP, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGHUP)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (sigaction(SIGWINCH, &sa, NULL) < 0)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "sigaction(SIGWINCH)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein#else

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!one_process) {

e8f95a682820a599fe41b22977010636be5c2717jim signal(SIGSEGV, sig_coredump);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGBUS

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGBUS, sig_coredump);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGBUS */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifdef SIGABORT

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGABORT, sig_coredump);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGABORT */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifdef SIGABRT

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGABRT, sig_coredump);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGABRT */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGILL

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGILL, sig_coredump);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGILL */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGXCPU

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGXCPU, SIG_DFL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGXCPU */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGXFSZ

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGXFSZ, SIG_DFL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGXFSZ */

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGTERM, sig_term);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGHUP

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGHUP, restart);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGHUP */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGWINCH

f4c310fd2555c6faca1f980f00b161eadb089023gstein signal(SIGWINCH, restart);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif /* SIGWINCH */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SIGPIPE

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe signal(SIGPIPE, SIG_IGN);

58fd79b56eb624bf011772994e9761d3c2e228c1orlikowski#endif /* SIGPIPE */

99d46a23c6eac800f327b29f8009f7d7da986230trawick

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

8b99f2a316c5e2fa6ab208206fdd7fc2bfc4a921dougm}

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gsteinstatic void process_child_status(int pid, ap_wait_t status)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

e8f95a682820a599fe41b22977010636be5c2717jim /* Child died... if it died due to a fatal error,

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm if ((WIFEXITED(status)) &&

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe WEXITSTATUS(status) == APEXIT_CHILDFATAL) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_NOERRNO, 0, server_conf,

f4c310fd2555c6faca1f980f00b161eadb089023gstein "Child %d returned a Fatal error... \n"

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "Apache is exiting!",

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pid);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe exit(APEXIT_CHILDFATAL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (WIFSIGNALED(status)) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe switch (WTERMSIG(status)) {

99d46a23c6eac800f327b29f8009f7d7da986230trawick case SIGTERM:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe case SIGHUP:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe case SIGUSR1:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe case SIGKILL:

e8f95a682820a599fe41b22977010636be5c2717jim break;

f4c310fd2555c6faca1f980f00b161eadb089023gstein default:

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef SYS_SIGLIST

f8033d657a57eab45af44368774d8beb3e4f7f35pquerna#ifdef WCOREDUMP

f8033d657a57eab45af44368774d8beb3e4f7f35pquerna if (WCOREDUMP(status)) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE,

99d46a23c6eac800f327b29f8009f7d7da986230trawick 0, server_conf,

f4c310fd2555c6faca1f980f00b161eadb089023gstein "child pid %d exit signal %s (%d), "

f4c310fd2555c6faca1f980f00b161eadb089023gstein "possible coredump in %s",

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pid, (WTERMSIG(status) >= NumSIG) ? "" :

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe SYS_SIGLIST[WTERMSIG(status)], WTERMSIG(status),

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_coredump_dir);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe else {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe 0, server_conf,

1aac1c71105133d669960501bdf2274e63561054minfrin "child pid %d exit signal %s (%d)", pid,

1aac1c71105133d669960501bdf2274e63561054minfrin SYS_SIGLIST[WTERMSIG(status)], WTERMSIG(status));

1aac1c71105133d669960501bdf2274e63561054minfrin#ifdef WCOREDUMP

1aac1c71105133d669960501bdf2274e63561054minfrin }

1aac1c71105133d669960501bdf2274e63561054minfrin#endif

1aac1c71105133d669960501bdf2274e63561054minfrin#else

1aac1c71105133d669960501bdf2274e63561054minfrin ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "child pid %d exit signal %d",

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pid, WTERMSIG(status));

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int setup_listeners(server_rec *s)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_listen_rec *lr;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int num_listeners = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (ap_listen_open(s->process, s->port)) {

99d46a23c6eac800f327b29f8009f7d7da986230trawick return 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (lr = ap_listeners; lr; lr = lr->next) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe num_listeners++;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return num_listeners;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

99d46a23c6eac800f327b29f8009f7d7da986230trawick

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#if defined(TCP_NODELAY) && !defined(MPE) && !defined(TPF)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void sock_disable_nagle(int s)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* The Nagle algorithm says that we should delay sending partial

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int just_say_no = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, (char *) &just_say_no,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe sizeof(int)) < 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "setsockopt: (TCP_NODELAY)");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#else

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#define sock_disable_nagle(s) /* NOOP */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

99d46a23c6eac800f327b29f8009f7d7da986230trawickint ap_graceful_stop_signalled(void)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* XXX - Does this really work? - Manoj */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return is_graceful;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void process_socket(ap_context_t *p, ap_socket_t *sock, int my_child_num, int my_thread_num)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe BUFF *conn_io;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe conn_rec *current_conn;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_iol *iol;

99d46a23c6eac800f327b29f8009f7d7da986230trawick long conn_id = my_child_num * HARD_THREAD_LIMIT + my_thread_num;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int csd;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe (void) ap_get_os_sock(&csd, sock);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe sock_disable_nagle(csd);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe iol = unix_attach_socket(sock);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (iol == NULL) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (errno == EBADF) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0, NULL,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "filedescriptor (%u) larger than FD_SETSIZE (%u) "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "found, you probably need to rebuild Apache with a "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "larger FD_SETSIZE", csd, FD_SETSIZE);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe else {

99d46a23c6eac800f327b29f8009f7d7da986230trawick ap_log_error(APLOG_MARK, APLOG_WARNING, errno, NULL,

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm "error attaching to socket");

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_close_socket(sock);

f4c310fd2555c6faca1f980f00b161eadb089023gstein return;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe (void) ap_update_child_status(my_child_num, my_thread_num,

f4c310fd2555c6faca1f980f00b161eadb089023gstein SERVER_BUSY_READ, (request_rec *) NULL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe conn_io = ap_bcreate(p, B_RDWR);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_bpush_iol(conn_io, iol);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein current_conn = ap_new_apr_connection(p, server_conf, conn_io, sock,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe conn_id);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_process_connection(current_conn);

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void check_pipe_of_death(void)

99d46a23c6eac800f327b29f8009f7d7da986230trawick{

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm pthread_mutex_lock(&pipe_of_death_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!workers_may_exit) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_status_t ret;

f4c310fd2555c6faca1f980f00b161eadb089023gstein char pipe_read_char;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int n=1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein ret = ap_recv(listensocks[0], &pipe_read_char, &n);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (ret == APR_EAGAIN) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* It lost the lottery. It must continue to suffer

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein else {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* It won the lottery (or something else is very

f4c310fd2555c6faca1f980f00b161eadb089023gstein workers_may_exit = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_mutex_unlock(&pipe_of_death_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void * worker_thread(void * dummy)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe proc_info * ti = dummy;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int process_slot = ti->pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int thread_slot = ti->tid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_context_t *tpool = ti->tpool;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_socket_t *csd = NULL;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_context_t *ptrans; /* Pool for per-transaction stuff */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_socket_t *sd = NULL;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int n;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int curr_pollfd, last_pollfd = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_pollfd_t *pollset;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_status_t rv;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe free(ti);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_create_context(&ptrans, tpool);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_mutex_lock(&worker_thread_count_mutex);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe worker_thread_count++;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_mutex_unlock(&worker_thread_count_mutex);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_setup_poll(&pollset, num_listensocks+1, tpool);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for(n=0 ; n <= num_listensocks ; ++n)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_add_poll_socket(pollset, listensocks[n], APR_POLLIN);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* TODO: Switch to a system where threads reuse the results from earlier

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe while (!workers_may_exit) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe workers_may_exit |= (ap_max_requests_per_child != 0) && (requests_this_child <= 0);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (workers_may_exit) break;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein (void) ap_update_child_status(process_slot, thread_slot, SERVER_READY,

f4c310fd2555c6faca1f980f00b161eadb089023gstein (request_rec *) NULL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_mutex_lock(&thread_accept_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (workers_may_exit) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_mutex_unlock(&thread_accept_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein break;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm if ((rv = SAFE_ACCEPT(ap_lock(process_accept_mutex)))

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe != APR_SUCCESS) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_EMERG, rv, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "ap_lock failed. Attempting to shutdown "

f4c310fd2555c6faca1f980f00b161eadb089023gstein "process gracefully.");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe workers_may_exit = 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein while (!workers_may_exit) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_status_t ret;

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_int16_t event;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein ret = ap_poll(pollset, &n, -1);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (ret != APR_SUCCESS) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (ret == APR_EINTR) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* poll() will only return errors in catastrophic

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_ERR, errno, (const server_rec *)

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_get_server_conf(), "poll: (listen)");

f4c310fd2555c6faca1f980f00b161eadb089023gstein workers_may_exit = 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (workers_may_exit) break;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_get_revents(&event, listensocks[0], pollset);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (event & APR_POLLIN) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* A process got a signal on the shutdown pipe. Check if we're

f4c310fd2555c6faca1f980f00b161eadb089023gstein check_pipe_of_death();

f4c310fd2555c6faca1f980f00b161eadb089023gstein continue;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (num_listensocks == 1) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein sd = ap_listeners->sd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein goto got_fd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein else {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* find a listener */

f4c310fd2555c6faca1f980f00b161eadb089023gstein curr_pollfd = last_pollfd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein do {

f4c310fd2555c6faca1f980f00b161eadb089023gstein curr_pollfd++;

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (curr_pollfd > num_listensocks) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein curr_pollfd = 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* XXX: Should we check for POLLERR? */

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_get_revents(&event, listensocks[curr_pollfd], pollset);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (event & APR_POLLIN) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein last_pollfd = curr_pollfd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein sd=listensocks[curr_pollfd];

f4c310fd2555c6faca1f980f00b161eadb089023gstein goto got_fd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein } while (curr_pollfd != last_pollfd);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe got_fd:

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!workers_may_exit) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_accept(&csd, sd, ptrans);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if ((rv = SAFE_ACCEPT(ap_unlock(process_accept_mutex)))

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe != APR_SUCCESS) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_EMERG, rv, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "ap_unlock failed. Attempting to shutdown "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "process gracefully.");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe workers_may_exit = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_mutex_unlock(&thread_accept_mutex);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe process_socket(ptrans, csd, process_slot, thread_slot);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe requests_this_child--;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe else {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if ((rv = SAFE_ACCEPT(ap_unlock(process_accept_mutex)))

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe != APR_SUCCESS) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_EMERG, rv, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "ap_unlock failed. Attempting to shutdown "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "process gracefully.");

f4c310fd2555c6faca1f980f00b161eadb089023gstein workers_may_exit = 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

e8f95a682820a599fe41b22977010636be5c2717jim pthread_mutex_unlock(&thread_accept_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein break;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_clear_pool(ptrans);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_destroy_pool(tpool);

99d46a23c6eac800f327b29f8009f7d7da986230trawick ap_update_child_status(process_slot, thread_slot, SERVER_DEAD,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe (request_rec *) NULL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_mutex_lock(&worker_thread_count_mutex);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe worker_thread_count--;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (worker_thread_count == 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* All the threads have exited, now finish the shutdown process

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe kill(my_pid, SIGTERM);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_mutex_unlock(&worker_thread_count_mutex);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein return NULL;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void child_main(int child_num_arg)

f4c310fd2555c6faca1f980f00b161eadb089023gstein{

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigset_t sig_mask;

99d46a23c6eac800f327b29f8009f7d7da986230trawick int signal_received;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_t thread;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pthread_attr_t thread_attr;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int i;

f4c310fd2555c6faca1f980f00b161eadb089023gstein int my_child_num = child_num_arg;

f4c310fd2555c6faca1f980f00b161eadb089023gstein proc_info *my_info = NULL;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_listen_rec *lr;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_status_t rv;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe my_pid = getpid();

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_create_context(&pchild, pconf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /*stuff to do before we switch id's, so we have permissions.*/

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe reopen_scoreboard(pchild);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe rv = SAFE_ACCEPT(ap_child_init_lock(&process_accept_mutex, lock_fname,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pchild));

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (rv != APR_SUCCESS) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_EMERG, rv, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "Couldn't initialize cross-process lock in child");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe clean_child_exit(APEXIT_CHILDFATAL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (unixd_setup_child()) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein clean_child_exit(APEXIT_CHILDFATAL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_child_init_hook(pchild, server_conf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /*done with init critical section */

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* All threads should mask signals out, accoring to sigwait(2) man page */

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigfillset(&sig_mask);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (pthread_sigmask(SIG_SETMASK, &sig_mask, NULL) != 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_ALERT, errno, server_conf, "pthread_sigmask");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

99d46a23c6eac800f327b29f8009f7d7da986230trawick requests_this_child = ap_max_requests_per_child;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* Set up the pollfd array */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe listensocks = ap_palloc(pchild,

f4c310fd2555c6faca1f980f00b161eadb089023gstein sizeof(*listensocks) * (num_listensocks + 1));

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_create_tcp_socket(&listensocks[0], pchild);

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_put_os_sock(&listensocks[0], &pipe_of_death[0], pchild);

f4c310fd2555c6faca1f980f00b161eadb089023gstein for (lr = ap_listeners, i = 1; i <= num_listensocks; lr = lr->next, ++i)

f4c310fd2555c6faca1f980f00b161eadb089023gstein listensocks[i]=lr->sd;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* Setup worker threads */

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein worker_thread_count = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_mutex_init(&worker_thread_count_mutex, NULL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_mutex_init(&pipe_of_death_mutex, NULL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_attr_init(&thread_attr);

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);

f4c310fd2555c6faca1f980f00b161eadb089023gstein for (i=0; i < ap_threads_per_child; i++) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein my_info = (proc_info *)malloc(sizeof(proc_info));

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (my_info == NULL) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_ALERT, errno, server_conf,

f4c310fd2555c6faca1f980f00b161eadb089023gstein "malloc: out of memory");

f4c310fd2555c6faca1f980f00b161eadb089023gstein clean_child_exit(APEXIT_CHILDFATAL);

99d46a23c6eac800f327b29f8009f7d7da986230trawick }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe my_info->pid = my_child_num;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe my_info->tid = i;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe my_info->sd = 0;

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_create_context(&my_info->tpool, pchild);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* We are creating threads right now */

f4c310fd2555c6faca1f980f00b161eadb089023gstein (void) ap_update_child_status(my_child_num, i, SERVER_STARTING,

f4c310fd2555c6faca1f980f00b161eadb089023gstein (request_rec *) NULL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifndef NO_THREADS

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (pthread_create(&thread, &thread_attr, worker_thread, my_info)) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_ALERT, errno, server_conf,

f4c310fd2555c6faca1f980f00b161eadb089023gstein "pthread_create: unable to create worker thread");

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* In case system resources are maxxed out, we don't want

f4c310fd2555c6faca1f980f00b161eadb089023gstein sleep(10);

f4c310fd2555c6faca1f980f00b161eadb089023gstein clean_child_exit(APEXIT_CHILDFATAL);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein#else

f4c310fd2555c6faca1f980f00b161eadb089023gstein worker_thread(my_info);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* The SIGTERM shouldn't let us reach this point, but just in case... */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe clean_child_exit(APEXIT_OK);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* We let each thread update it's own scoreboard entry. This is done

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein pthread_attr_destroy(&thread_attr);

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* This thread will be the one responsible for handling signals */

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigemptyset(&sig_mask);

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigaddset(&sig_mask, SIGTERM);

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigaddset(&sig_mask, SIGINT);

f4c310fd2555c6faca1f980f00b161eadb089023gstein sigwait(&sig_mask, &signal_received);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe switch (signal_received) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe case SIGTERM:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe case SIGINT:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe just_die(signal_received);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe break;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe default:

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_ALERT, errno, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "received impossible signal: %d", signal_received);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe just_die(SIGTERM);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int make_child(server_rec *s, int slot, time_t now)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (slot + 1 > max_daemons_limit) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe max_daemons_limit = slot + 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (one_process) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe set_signals();

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_scoreboard_image->parent[slot].pid = getpid();

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe child_main(slot);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* Tag this slot as occupied so that perform_idle_server_maintenance

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe (void) ap_update_child_status(slot, 0, SERVER_STARTING, (request_rec *) NULL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if ((pid = fork()) == -1) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, "fork: Unable to fork new process");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* fork didn't succeed. Fix the scoreboard or else

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz (void) ap_update_child_status(slot, 0, SERVER_DEAD, (request_rec *) NULL);

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz /* In case system resources are maxxed out, we don't want

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz sleep(10);

0fad1368edb71b1411d6d00684900e5d2a6e6b78jerenkrantz

0df0055470838140d9797dd186b2fdbe67edcc57jorton return -1;

0df0055470838140d9797dd186b2fdbe67edcc57jorton }

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz if (!pid) {

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz#ifdef AIX_BIND_PROCESSOR

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz /* By default, AIX binds to a single processor. This bit unbinds

0df0055470838140d9797dd186b2fdbe67edcc57jorton#include <sys/processor.h>

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz int status = bindprocessor(BINDPROCESS, (int)getpid(),

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz PROCESSOR_CLASS_ANY);

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz if (status != OK)

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, server_conf,

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz "processor unbind failed %d", status);

3ded62d7f2c9b12616d718b8c97d3044baa9ecdbjerenkrantz#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe RAISE_SIGSTOP(MAKE_CHILD);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe signal(SIGTERM, just_die);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe child_main(slot);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* else */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_scoreboard_image->parent[slot].pid = pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void startup_children(int number_to_start)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int i;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (ap_scoreboard_image->parent[i].pid != 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe continue;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (make_child(server_conf, i, 0) < 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe break;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe --number_to_start;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int idle_spawn_rate = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#ifndef MAX_SPAWN_RATE

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#define MAX_SPAWN_RATE (32)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe#endif

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic int hold_off_on_exponential_spawning;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void perform_idle_server_maintenance(void)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int i, j;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int idle_thread_count;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe thread_score *ss;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe time_t now = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int free_length;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int free_slots[MAX_SPAWN_RATE];

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int last_non_dead;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int total_non_dead;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* initialize the free_list */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe free_length = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe idle_thread_count = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe last_non_dead = -1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe total_non_dead = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_check_signals();

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_sync_scoreboard_image();

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (i = 0; i < ap_daemons_limit; ++i) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* Initialization to satisfy the compiler. It doesn't know

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int status = SERVER_DEAD;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int any_dying_threads = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int all_dead_threads = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int idle_thread_addition = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (i >= max_daemons_limit && free_length == idle_spawn_rate)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe break;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (j = 0; j < ap_threads_per_child; j++) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ss = &ap_scoreboard_image->servers[i][j];

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe status = ss->status;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe any_dying_threads = any_dying_threads || (status == SERVER_DEAD)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe || (status == SERVER_GRACEFUL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe all_dead_threads = all_dead_threads && (status == SERVER_DEAD);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* We consider a starting server as idle because we started it

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (status <= SERVER_READY) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ++idle_thread_addition;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (all_dead_threads && free_length < idle_spawn_rate) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe free_slots[free_length] = i;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ++free_length;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (!all_dead_threads) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein last_non_dead = i;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!any_dying_threads) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ++total_non_dead;

f4c310fd2555c6faca1f980f00b161eadb089023gstein idle_thread_count += idle_thread_addition;

e8f95a682820a599fe41b22977010636be5c2717jim }

f5ec9b038bb9db933072ba2c0a8e7bb2a3cedbdagstein }

f5ec9b038bb9db933072ba2c0a8e7bb2a3cedbdagstein max_daemons_limit = last_non_dead + 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (idle_thread_count > max_spare_threads) {

1ccd992d37d62c8cb2056126f2234f64ec189bfddougm /* Kill off one child */

e8f95a682820a599fe41b22977010636be5c2717jim char char_of_death = '!';

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (write(pipe_of_death[1], &char_of_death, 1) == -1) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_WARNING, errno, server_conf, "write pipe_of_death");

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

99d46a23c6eac800f327b29f8009f7d7da986230trawick idle_spawn_rate = 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein else if (idle_thread_count < min_spare_threads) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* terminate the free list */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (free_length == 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* only report this condition once */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe static int reported = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (!reported) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "server reached MaxClients setting, consider"

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe " raising the MaxClients setting");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe reported = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe idle_spawn_rate = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe else {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (idle_spawn_rate >= 8) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "server seems busy, (you may need "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "to increase StartServers, ThreadsPerChild "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "or Min/MaxSparetThreads), "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "spawning %d children, there are around %d idle "

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "threads, and %d total children", idle_spawn_rate,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe idle_thread_count, total_non_dead);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (i = 0; i < free_length; ++i) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe make_child(server_conf, free_slots[i], now);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton /* the next time around we want to spawn twice as many if this

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton if (hold_off_on_exponential_spawning) {

e8f95a682820a599fe41b22977010636be5c2717jim --hold_off_on_exponential_spawning;

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton }

e8f95a682820a599fe41b22977010636be5c2717jim else if (idle_spawn_rate < MAX_SPAWN_RATE) {

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton idle_spawn_rate *= 2;

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton }

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton }

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton }

42f2b4b0e9b84dfd8acbb9c0da18a07c664e30a1jorton else {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe idle_spawn_rate = 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowestatic void server_main_loop(int remaining_children_to_start)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int child_slot;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_wait_t status;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int pid;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int i;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe while (!restart_pending && !shutdown_pending) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pid = wait_or_timeout(&status);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (pid >= 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe process_child_status(pid, status);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* non-fatal death... note that it's gone in the scoreboard. */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe child_slot = find_child_by_pid(pid);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (child_slot >= 0) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe for (i = 0; i < ap_threads_per_child; i++)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_update_child_status(child_slot, i, SERVER_DEAD, (request_rec *) NULL);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (remaining_children_to_start

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe && child_slot < ap_daemons_limit) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* we're still doing a 1-for-1 replacement of dead

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe make_child(server_conf, child_slot, time(NULL));

f4c310fd2555c6faca1f980f00b161eadb089023gstein --remaining_children_to_start;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

f4c310fd2555c6faca1f980f00b161eadb089023gstein#ifdef HAS_OTHER_CHILD

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein else if (reap_other_child(pid, status) == 0) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* handled */

f4c310fd2555c6faca1f980f00b161eadb089023gstein#endif

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein else if (is_graceful) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* Great, we've probably just lost a slot in the

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0, server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "long lost child came home! (pid %d)", pid);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* Don't perform idle maintenance when a child dies,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe continue;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe else if (remaining_children_to_start) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* we hit a 1 second timeout in which none of the previous

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe startup_children(remaining_children_to_start);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe remaining_children_to_start = 0;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* In any event we really shouldn't do the code below because

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe continue;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

f80b9e9d38dff8bc3f51406475adb99d7fe888cegstein

f80b9e9d38dff8bc3f51406475adb99d7fe888cegstein perform_idle_server_maintenance();

f80b9e9d38dff8bc3f51406475adb99d7fe888cegstein }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe}

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wroweint ap_mpm_run(ap_context_t *_pconf, ap_context_t *plog, server_rec *s)

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe{

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe int remaining_children_to_start;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_status_t rv;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe pconf = _pconf;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe server_conf = s;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (pipe(pipe_of_death) == -1) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_ERR, errno,

99d46a23c6eac800f327b29f8009f7d7da986230trawick (const server_rec*) server_conf,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe "pipe: (pipe_of_death)");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe exit(1);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if (fcntl(pipe_of_death[0], F_SETFD, O_NONBLOCK) == -1) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_ERR, errno,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe (const server_rec*) server_conf,

99d46a23c6eac800f327b29f8009f7d7da986230trawick "fcntl: O_NONBLOCKing (pipe_of_death)");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe exit(1);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe server_conf = s;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe if ((num_listensocks = setup_listeners(server_conf)) < 1) {

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe /* XXX: hey, what's the right way for the mpm to indicate a fatal error? */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, 0, s,

99d46a23c6eac800f327b29f8009f7d7da986230trawick "no listening sockets available, shutting down");

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe return 1;

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe }

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_log_pid(pconf, ap_pid_fname);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe

99d46a23c6eac800f327b29f8009f7d7da986230trawick /* Initialize cross-process accept lock */

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe lock_fname = ap_psprintf(_pconf, "%s.%lu",

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe ap_server_root_relative(_pconf, lock_fname),

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe my_pid);

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe rv = ap_create_lock(&process_accept_mutex, APR_MUTEX, APR_CROSS_PROCESS,

6f15570e3adc0faf87bf55f70857028276fc9e32wrowe lock_fname, _pconf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (rv != APR_SUCCESS) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,

f4c310fd2555c6faca1f980f00b161eadb089023gstein "Couldn't create cross-process lock");

f4c310fd2555c6faca1f980f00b161eadb089023gstein return 1;

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein if (!is_graceful) {

f4c310fd2555c6faca1f980f00b161eadb089023gstein reinit_scoreboard(pconf);

f4c310fd2555c6faca1f980f00b161eadb089023gstein }

f4c310fd2555c6faca1f980f00b161eadb089023gstein

f4c310fd2555c6faca1f980f00b161eadb089023gstein set_signals();

f4c310fd2555c6faca1f980f00b161eadb089023gstein /* Don't thrash... */