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* cygheap.cc (init_cheap): Set aside space for heap walk pointer.

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(_csbrk): Make logic for detecting when to alloc cognizant of initialization
condition.
(_cmalloc): Use a structure to hold bucket size and heap chain pointer.  Store
pointer to next freed block in bucket size location so that it will be easy to
see if a block is allocated.
(_cfree): Store pointer to next freed block in bucket size location.
(_crealloc): Use macro to retrieve bucket size.
(cygheap_init): Eliminate.
(cygheap_fixup_in_child): Add second argument to determine if we were execed or
not.  In execed case, walk the heap, cleaning up any orphaned blocks.
* cygheap.h: Add a "MAX" value to cygheap_types.  Remove cygheap_init
declaration.  Accomodate new argument to cygheap_fixup_in child.
* fork.cc (fork): Accomodate extra argument to cygheap_fixup_in_child.
* dcrt0.cc (dll_crt0_1): Ditto.  Remove call to cygheap_init.
This commit is contained in:
Christopher Faylor
2000-09-30 04:54:11 +00:00
parent 90fe77395a
commit 8d82847a29
5 changed files with 104 additions and 39 deletions
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6
winsup/cygwin/cygheap.h
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@@ -20,7 +20,8 @@ enum cygheap_types
HEAP_1_STR,
HEAP_1_ARGV,
HEAP_1_BUF,
HEAP_1_EXEC
HEAP_1_EXEC,
HEAP_1_MAX = 100
};
#define CYGHEAPSIZE ((1000 * sizeof (fhandler_union)) + (2 * 65536))
@@ -30,10 +31,9 @@ extern HANDLE cygheap_max;
#define incygheap(s) (cygheap && ((char *) (s) >= (char *) cygheap) && ((char *) (s) <= ((char *) cygheap) + CYGHEAPSIZE))
void cygheap_init ();
extern "C" {
void __stdcall cfree (void *);
void __stdcall cygheap_fixup_in_child (HANDLE);
void __stdcall cygheap_fixup_in_child (HANDLE, bool);
void *__stdcall cmalloc (cygheap_types, DWORD);
void *__stdcall crealloc (void *, DWORD);
void *__stdcall ccalloc (cygheap_types, DWORD, DWORD);