#

# This file defines probes for local features that vmalloc requires.

# Such probes are interpreted by the "iffe" language interpreter.

# Results are stored in the FEATURE directory. Some of the

# {lib,hdr,sys,typ} tests may also be done in the AST features/lib;

# repeating them here allows for single standalone and AST sources.

#

ref -D_def_map_ast=1

lib atexit,getpagesize,mallinfo,mallopt,memalign,mstats

lib onexit,pvalloc,strdup,valloc,vmalloc

lib _malloc,__malloc,__libc_malloc

hdr alloca,malloc,stat,stdlib,unistd

mem mallinfo.arena,mstats.bytes_total malloc.h

sys stat

typ ssize_t

tst mem_sbrk note{ brk()/sbrk() work as expected }end execute{

#include <sys/types.h>

#include <unistd.h>

#undef uchar

#define uchar unsigned char

int main()

{ uchar *brk0, *brk1;

/* allocate a big chunk */

if(!(brk0 = (uchar*)sbrk(0)) || brk0 == (uchar*)(-1))

return 1;

brk0 += 256*1024;

if(brk(brk0) != 0)

return 1;

if((brk1 = (uchar*)sbrk(0)) != brk0)

return 1;

/* now return half of it */

brk1 -= 128*1024;

if(brk(brk1) != 0 )

return 1;

if((brk0 = (uchar*)sbrk(0)) != brk1)

return 1;

return 0;

}

}end

tst map_malloc note{ map malloc to _ast_malloc }end noexecute{

#if __CYGWIN__

int main() { return 1; }

#else

static int user = 0;

_BEGIN_EXTERNS_

#if _lib_strdup

extern char* strdup _ARG_((const char*));

#define LOCAL() strdup("s")

#else

extern void* calloc _ARG_((unsigned int, unsigned int));

#define LOCAL() calloc(1,1)

#endif

#if __CYGWIN__

#define extern __declspec(dllexport)

#endif

#define HT double

static HT heap[1024 * 4];

static HT* hp = &heap[1];

static HT* op;

#define MALLOC(n) if(user)return&heap[0];op=hp;hp+=(n+sizeof(HT)-1)/sizeof(HT);return(void*)op;

#define INTERCEPTED(p) (((char*)(p))==((char*)&heap[0]))

#if _STD_

extern void free(void* p) { }

extern void _free(void* p) { }

extern void __free(void* p) { }

extern void __libc_free(void* p) { }

extern void* malloc(unsigned int n) { MALLOC(n); }

extern void* _malloc(unsigned int n) { MALLOC(n); }

extern void* __malloc(unsigned int n) { MALLOC(n); }

extern void* __libc_malloc(unsigned int n) { MALLOC(n); }

#else

extern void free(p) char* p; { }

extern void _free(p) char* p; { }

extern void __free(p) char* p; { }

extern void __libc_free(p) char* p; { }

extern void* malloc(n) unsigned int n; { MALLOC(n); }

extern void* _malloc(n) unsigned int n; { MALLOC(n); }

extern void* __malloc(n) unsigned int n; { MALLOC(n); }

extern void* __libc_malloc(n) unsigned int n; { MALLOC(n); }

#endif

_END_EXTERNS_

int main() { user = 1; return !INTERCEPTED(LOCAL()); }

#endif

}end

tst map_malloc note{ map malloc to _ast_malloc -- wimp-o mach? }end noexecute{

#if _map_malloc

int main() { return 0; }

#else

_BEGIN_EXTERNS_

#if _STD_

void* calloc(unsigned n, unsigned m) { exit(1); }

#else

void* calloc(n, m) unsigned n, m; { exit(1); }

#endif

_END_EXTERNS_

int main() { return 0; }

#endif

}end

lib alloca note{ alloca exists }end link{

#if _hdr_alloca

#include <alloca.h>

#endif

int

main()

{ alloca(10);

}

}end

tst mal_alloca note{ alloca is based on malloc() }end execute{

#if __CYGWIN__

int main() { return 1; }

#else

#if _hdr_alloca

#include <alloca.h>

#endif

#if _STD_

void* malloc(unsigned int size)

#else

void* malloc(size) unsigned int size;

#endif

{ exit(0);

return 0;

}

int main()

{ alloca(10);

return 1;

}

#endif

}end

tst stk_down note{ stack grows downward }end execute{

static growdown()

{ static char* addr = 0;

char array[4];

if(!addr)

{ addr = &array[0];

return growdown();

}

else if(addr < &array[0])

return 0;

else return 1;

}

int main() { return growdown() ? 0 : 1; }

}end

cat{

#include "FEATURE/mmap"

#if _BLD_INSTRUMENT || cray || _UWIN && _BLD_ast

#undef _map_malloc

#define _std_malloc 1 /* defer to standard malloc */

#endif

#if _mmap_anon

#define _mem_mmap_anon 1

#endif

#if _mmap_devzero

#define _mem_mmap_zero 1

#endif

}end