Consolidate oom_check() functions

This consolidates the duplicated oom_check() functions, as well as
splitting them into OS dependant versions to avoid the #ifdef
grossness that was present in the old osdep.c version.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Makefile.target

@@ -88,7 +88,7 @@ $(call set-vpath, $(SRC_PATH)/linux-user:$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR
 QEMU_CFLAGS+=-I$(SRC_PATH)/linux-user -I$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR)
 obj-y = main.o syscall.o strace.o mmap.o signal.o thunk.o \
       elfload.o linuxload.o uaccess.o gdbstub.o cpu-uname.o \
-      qemu-malloc.o
+      qemu-malloc.o $(oslib-obj-y)
 
 obj-$(TARGET_HAS_BFLT) += flatload.o
 

oslib-posix.c

@@ -31,8 +31,7 @@
 #include "trace.h"
 #include "qemu_socket.h"
 
-#if !defined(_POSIX_C_SOURCE) || defined(__sun__)
-static void *oom_check(void *ptr)
+void *qemu_oom_check(void *ptr)
 {
     if (ptr == NULL) {
         fprintf(stderr, "Failed to allocate memory: %s\n", strerror(errno));
@@ -40,7 +39,6 @@ static void *oom_check(void *ptr)
     }
     return ptr;
 }
-#endif
 
 void *qemu_memalign(size_t alignment, size_t size)
 {
@@ -54,9 +52,9 @@ void *qemu_memalign(size_t alignment, size_t size)
         abort();
     }
 #elif defined(CONFIG_BSD)
-    ptr = oom_check(valloc(size));
+    ptr = qemu_oom_check(valloc(size));
 #else
-    ptr = oom_check(memalign(alignment, size));
+    ptr = qemu_oom_check(memalign(alignment, size));
 #endif
     trace_qemu_memalign(alignment, size, ptr);
     return ptr;

oslib-win32.c

@@ -31,7 +31,7 @@
 #include "trace.h"
 #include "qemu_socket.h"
 
-static void *oom_check(void *ptr)
+void *qemu_oom_check(void *ptr)
 {
     if (ptr == NULL) {
         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
@@ -47,7 +47,7 @@ void *qemu_memalign(size_t alignment, size_t size)
     if (!size) {
         abort();
     }
-    ptr = oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
+    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
     trace_qemu_memalign(alignment, size, ptr);
     return ptr;
 }
@@ -62,7 +62,7 @@ void *qemu_vmalloc(size_t size)
     if (!size) {
         abort();
     }
-    ptr = oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
+    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
     trace_qemu_vmalloc(size, ptr);
     return ptr;
 }

qemu-common.h

@@ -175,6 +175,7 @@ const char *path(const char *pathname);
 int ffs(int i);
 #endif
 
+void *qemu_oom_check(void *ptr);
 void *qemu_malloc(size_t size);
 void *qemu_realloc(void *ptr, size_t size);
 void *qemu_mallocz(size_t size);

qemu-malloc.c

@@ -25,14 +25,6 @@
 #include "trace.h"
 #include <stdlib.h>
 
-static void *oom_check(void *ptr)
-{
-    if (ptr == NULL) {
-        abort();
-    }
-    return ptr;
-}
-
 void qemu_free(void *ptr)
 {
     trace_qemu_free(ptr);
@@ -54,7 +46,7 @@ void *qemu_malloc(size_t size)
     if (!size && !allow_zero_malloc()) {
         abort();
     }
-    ptr = oom_check(malloc(size ? size : 1));
+    ptr = qemu_oom_check(malloc(size ? size : 1));
     trace_qemu_malloc(size, ptr);
     return ptr;
 }
@@ -65,7 +57,7 @@ void *qemu_realloc(void *ptr, size_t size)
     if (!size && !allow_zero_malloc()) {
         abort();
     }
-    newptr = oom_check(realloc(ptr, size ? size : 1));
+    newptr = qemu_oom_check(realloc(ptr, size ? size : 1));
     trace_qemu_realloc(ptr, size, newptr);
     return newptr;
 }
@@ -75,7 +67,7 @@ void *qemu_mallocz(size_t size)
     if (!size && !allow_zero_malloc()) {
         abort();
     }
-    return oom_check(calloc(1, size ? size : 1));
+    return qemu_oom_check(calloc(1, size ? size : 1));
 }
 
 char *qemu_strdup(const char *str)