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Add out of memory and zero size argument checks to be consistent with

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the qemu_malloc routines
This commit is contained in:
malc 2009-07-08 18:24:05 +04:00
parent e8d2a88755
commit d644f8beaa
1 changed files with 25 additions and 5 deletions
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30
osdep.c
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@ -51,10 +51,23 @@
#include "sysemu.h"
#include "qemu_socket.h"
#if !defined(_POSIX_C_SOURCE) || defined(_WIN32)
static void *oom_check(void *ptr)
{
if (ptr == NULL) {
abort();
}
return ptr;
}
#endif
#if defined(_WIN32)
void *qemu_memalign(size_t alignment, size_t size)
{
return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
if (!size) {
abort();
}
return oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
}
void *qemu_vmalloc(size_t size)
@ -62,7 +75,10 @@ void *qemu_vmalloc(size_t size)
/* FIXME: this is not exactly optimal solution since VirtualAlloc
has 64Kb granularity, but at least it guarantees us that the
memory is page aligned. */
return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
if (!size) {
abort();
}
return oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
}
void qemu_vfree(void *ptr)
@ -106,6 +122,10 @@ static void *kqemu_vmalloc(size_t size)
struct statfs stfs;
#endif
if (!size) {
abort ();
}
if (phys_ram_fd < 0) {
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
@ -188,12 +208,12 @@ void *qemu_memalign(size_t alignment, size_t size)
void *ptr;
ret = posix_memalign(&ptr, alignment, size);
if (ret != 0)
return NULL;
abort();
return ptr;
#elif defined(HOST_BSD)
return valloc(size);
return oom_check(valloc(size));
#else
return memalign(alignment, size);
return oom_check(memalign(alignment, size));
#endif
}