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Fix memory allocation on Windows.

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* Take the cache line roundings into account when allocating a hunk.
* Use size_t were apropriate.
* remove some unnecessary and likely broken calls.

Another case of: "How could this ever work"?
This commit is contained in:
Yamagi Burmeister 2018-10-25 18:42:01 +02:00
parent 60c12228c9
commit b9e5306c84
1 changed files with 8 additions and 11 deletions
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19
src/backends/windows/shared/hunk.c
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@ -30,17 +30,18 @@
byte *membase;
int hunkcount;
int hunkmaxsize;
int cursize;
size_t hunkmaxsize;
size_t cursize;
void *
Hunk_Begin(int maxsize)
{
/* reserve a huge chunk of memory,
but don't commit any yet */
/* reserve a huge chunk of memory, but don't commit any yet */
/* plus 32 bytes for cacheline */
hunkmaxsize = maxsize + sizeof(size_t) + 32;
cursize = 0;
hunkmaxsize = maxsize;
membase = VirtualAlloc(NULL, maxsize, MEM_RESERVE, PAGE_NOACCESS);
membase = VirtualAlloc(NULL, hunkmaxsize, MEM_RESERVE, PAGE_NOACCESS);
if (!membase)
{
@ -63,10 +64,7 @@ Hunk_Alloc(int size)
if (!buf)
{
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&buf, 0, NULL);
Sys_Error("VirtualAlloc commit failed.\n%s", buf);
Sys_Error("VirtualAlloc commit failed.\n");
}
cursize += size;
@ -97,4 +95,3 @@ Hunk_Free(void *base)
hunkcount--;
}