static void* FailRealloc(TRI_memory_zone_t* zone, void* old, size_t n) {
// we can fail, so let's check whether we should fail intentionally...
if (zone->_failable && ShouldFail(n)) {
// intentionally return NULL
errno = ENOMEM;
return nullptr;
}
return BuiltInRealloc(old, n);
}
void TRI_SystemFreeZ (void* p, char const* file, int line) {
#else
void TRI_SystemFree (void* p) {
#endif
#ifdef TRI_ENABLE_MAINTAINER_MODE
if (p == nullptr) {
fprintf(stderr,
"freeing nil ptr in %s:%d\n",
file,
line);
}
#endif
free(p);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief wrapper for realloc
///
/// this wrapper is used together with libev, as the builtin libev allocator
/// causes problems with Valgrind:
/// - http://lists.schmorp.de/pipermail/libev/2012q2/001917.html
/// - http://lists.gnu.org/archive/html/bug-gnulib/2011-03/msg00243.html
////////////////////////////////////////////////////////////////////////////////
void* TRI_WrappedReallocate (void* ptr, long size) {
if (ptr == nullptr && size == 0) {
return nullptr;
}
return BuiltInRealloc(ptr, (size_t) size);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief initialize memory subsystem
////////////////////////////////////////////////////////////////////////////////
void TRI_InitializeMemory () {
if (CoreInitialized == 0) {
static size_t const ReserveSize = 1024 * 1024 * 10;
TriCoreMemZone._zid = 0;
TriCoreMemZone._failed = false;
TriCoreMemZone._failable = false;
TriUnknownMemZone._zid = 1;
TriUnknownMemZone._failed = false;
TriUnknownMemZone._failable = true;
#ifdef TRI_ENABLE_FAILURE_TESTS
InitFailMalloc();
#endif
CoreReserve = BuiltInMalloc(ReserveSize);
if (CoreReserve == nullptr) {
fprintf(stderr,
"FATAL: cannot allocate initial core reserve of size %llu, giving up!\n",
(unsigned long long) ReserveSize);
}
else {
CoreInitialized = 1;
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief shutdown memory subsystem
////////////////////////////////////////////////////////////////////////////////
void TRI_ShutdownMemory () {
if (CoreInitialized == 1) {
free(CoreReserve);
CoreInitialized = 0;
}
}