Make possible to check memory allocations inside chromium

base/process/memory_linux.cc

Index: base/process/memory_linux.cc
diff --git a/base/process/memory_linux.cc b/base/process/memory_linux.cc
index 6bed68bd8320346b1ff98a39417e604e0339b020..bb4c91e0b2dc9a3610b8b4c39ae675e558623057 100644
--- a/base/process/memory_linux.cc
+++ b/base/process/memory_linux.cc
@@ -11,6 +11,7 @@
 #include "base/logging.h"
 #include "base/process/internal_linux.h"
 #include "base/strings/string_number_conversions.h"
+#include "third_party/tcmalloc/chromium/src/gperftools/tcmalloc.h"

[willchan no longer on Chromium, 2013/11/28 03:38:28]

You should use an #if defined(USE_TCMALLOC) here.

 
 namespace base {
 
@@ -125,6 +126,35 @@ int posix_memalign(void** ptr, size_t alignment, size_t size) {
 
 #endif  // !*_SANITIZER
 
+bool UncheckedMalloc(size_t size, void** result) {
+#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
+    defined(THREAD_SANITIZER) || defined(LEAK_SANITIZER) || \
+    (!defined(LIBC_GLIBC) && !defined(USE_TCMALLOC))
+  *result = malloc(size);
+#elif defined(LIBC_GLIBC) && !defined(USE_TCMALLOC)
+  *result = __libc_malloc(size);
+#else // tcmalloc

[willchan no longer on Chromium, 2013/11/28 03:38:28]

please do #elif defined(USE_TCMALLOC) and an #else #error.

+  *result = tc_malloc_skip_new_handler(size);
+#endif
+  return *result;
+}
+
+bool UncheckedCalloc(size_t num_items, size_t size, void** result) {
+  const size_t alloc_size = num_items * size;
+
+  // Overflow check
+  if (size && ((alloc_size / size) != num_items)) {
+    result = NULL;
+    return false;
+  }
+
+  if (!UncheckedMalloc(alloc_size, result))
+    return false;
+
+  memset(result, 0, alloc_size);
+  return true;
+}
+
 void EnableTerminationOnHeapCorruption() {
   // On Linux, there nothing to do AFAIK.
 }