diogo/yap-6.3
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clean code a little bit.

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This commit is contained in:
Vítor Santos Costa 2009-04-29 14:22:20 +01:00
parent 8c3406adac
commit 04f3b32a9a
1 changed files with 33 additions and 34 deletions
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61
C/alloc.c
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@ -893,37 +893,22 @@ InitWorkSpace(Int s)
return (void *) a;
}
static int
ExtendWorkSpace(Int s, int fixed_allocation)
static MALLOC_T
mmap_extension(Int s, MALLOC_T base, int fixed_allocation)
{
#ifdef YAPOR
Yap_Error(INTERNAL_ERROR, TermNil, "cannot extend stacks (ExtendWorkSpace)");
return(FALSE);
#else
MALLOC_T a;
prolog_exec_mode OldPrologMode = Yap_PrologMode;
MALLOC_T base = WorkSpaceTop;
#if !defined(_AIX) && !defined(__hpux) && !defined(__APPLE__)
int fd;
#endif
if (fixed_allocation == MAP_FIXED)
base = WorkSpaceTop;
else
base = 0L;
#if defined(_AIX) || defined(__hpux)
Yap_PrologMode = ExtendStackMode;
a = mmap(base, (size_t) s, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
#elif defined(__APPLE__)
Yap_PrologMode = ExtendStackMode;
a = mmap(base, (size_t) s, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANON | fixed_allocation, -1, 0);
#else
Yap_PrologMode = ExtendStackMode;
fd = open("/dev/zero", O_RDWR);
if (fd < 0) {
#if HAVE_MKSTEMP
@ -939,8 +924,7 @@ ExtendWorkSpace(Int s, int fixed_allocation)
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mkstemp could not create temporary file %s", file);
#endif /* HAVE_STRERROR */
Yap_PrologMode = OldPrologMode;
return FALSE;
return (MALLOC_T)-1;
}
#else
#if HAVE_TMPNAM
@ -956,32 +940,28 @@ ExtendWorkSpace(Int s, int fixed_allocation)
Yap_ErrorMessage = Yap_ErrorSay;
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mmap could not open %s", file);
Yap_PrologMode = OldPrologMode;
return FALSE;
return (MALLOC_T)-1;
}
if (lseek(fd, s, SEEK_SET) < 0) {
Yap_ErrorMessage = Yap_ErrorSay;
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mmap could not lseek in mmapped file %s", file);
Yap_PrologMode = OldPrologMode;
close(fd);
return FALSE;
return (MALLOC_T)-1;
}
if (write(fd, "", 1) < 0) {
Yap_ErrorMessage = Yap_ErrorSay;
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mmap could not write in mmapped file %s", file);
Yap_PrologMode = OldPrologMode;
close(fd);
return FALSE;
return (MALLOC_T)-1;
}
if (unlink(file) < 0) {
Yap_ErrorMessage = Yap_ErrorSay;
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mmap could not unlink mmapped file %s", file);
Yap_PrologMode = OldPrologMode;
close(fd);
return FALSE;
return (MALLOC_T)-1;
}
}
a = mmap(base, (size_t) s, PROT_READ | PROT_WRITE | PROT_EXEC,
@ -1000,10 +980,30 @@ ExtendWorkSpace(Int s, int fixed_allocation)
snprintf3(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"mmap could not close file ]\n");
#endif
Yap_PrologMode = OldPrologMode;
return FALSE;
return (MALLOC_T)-1;
}
#endif
return a;
}
static int
ExtendWorkSpace(Int s, int fixed_allocation)
{
#ifdef YAPOR
Yap_Error(INTERNAL_ERROR, TermNil, "cannot extend stacks (ExtendWorkSpace)");
return(FALSE);
#else
MALLOC_T a;
prolog_exec_mode OldPrologMode = Yap_PrologMode;
MALLOC_T base = WorkSpaceTop;
if (fixed_allocation == MAP_FIXED)
base = WorkSpaceTop;
else
base = 0L;
Yap_PrologMode = ExtendStackMode;
a = mmap_extension(s, base, fixed_allocation);
Yap_PrologMode = OldPrologMode;
if (a == (MALLOC_T) - 1) {
Yap_ErrorMessage = Yap_ErrorSay;
#if HAVE_STRERROR
@ -1013,7 +1013,6 @@ ExtendWorkSpace(Int s, int fixed_allocation)
snprintf4(Yap_ErrorMessage, MAX_ERROR_MSG_SIZE,
"could not allocate %d bytes", (int)s);
#endif
Yap_PrologMode = OldPrologMode;
return FALSE;
}
if (fixed_allocation) {