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-rw-r--r--libc/bionic/malloc_debug_common.cpp652
1 files changed, 326 insertions, 326 deletions
diff --git a/libc/bionic/malloc_debug_common.cpp b/libc/bionic/malloc_debug_common.cpp
index 77ec080fe..6677c22e3 100644
--- a/libc/bionic/malloc_debug_common.cpp
+++ b/libc/bionic/malloc_debug_common.cpp
@@ -26,19 +26,17 @@
* SUCH DAMAGE.
*/
-/*
- * Contains definition of structures, global variables, and implementation of
- * routines that are used by malloc leak detection code and other components in
- * the system. The trick is that some components expect these data and
- * routines to be defined / implemented in libc.so library, regardless
- * whether or not MALLOC_LEAK_CHECK macro is defined. To make things even
- * more tricky, malloc leak detection code, implemented in
- * libc_malloc_debug.so also requires access to these variables and routines
- * (to fill allocation entry hash table, for example). So, all relevant
- * variables and routines are defined / implemented here and exported
- * to all, leak detection code and other components via dynamic (libc.so),
- * or static (libc.a) linking.
- */
+// Contains definition of structures, global variables, and implementation of
+// routines that are used by malloc leak detection code and other components in
+// the system. The trick is that some components expect these data and
+// routines to be defined / implemented in libc.so library, regardless
+// whether or not MALLOC_LEAK_CHECK macro is defined. To make things even
+// more tricky, malloc leak detection code, implemented in
+// libc_malloc_debug.so also requires access to these variables and routines
+// (to fill allocation entry hash table, for example). So, all relevant
+// variables and routines are defined / implemented here and exported
+// to all, leak detection code and other components via dynamic (libc.so),
+// or static (libc.a) linking.
#include "malloc_debug_common.h"
@@ -56,7 +54,16 @@ static HashTable g_hash_table;
// Support for malloc debugging.
// Table for dispatching malloc calls, initialized with default dispatchers.
static const MallocDebug __libc_malloc_default_dispatch __attribute__((aligned(32))) = {
- Malloc(malloc), Malloc(free), Malloc(calloc), Malloc(realloc), Malloc(memalign), Malloc(malloc_usable_size),
+ Malloc(calloc),
+ Malloc(free),
+ Malloc(mallinfo),
+ Malloc(malloc),
+ Malloc(malloc_usable_size),
+ Malloc(memalign),
+ Malloc(posix_memalign),
+ Malloc(pvalloc),
+ Malloc(realloc),
+ Malloc(valloc),
};
// Selector of dispatch table to use for dispatching malloc calls.
@@ -97,176 +104,174 @@ static int g_malloc_debug_level = 0;
// =============================================================================
static int hash_entry_compare(const void* arg1, const void* arg2) {
- int result;
-
- const HashEntry* e1 = *static_cast<HashEntry* const*>(arg1);
- const HashEntry* e2 = *static_cast<HashEntry* const*>(arg2);
-
- // if one or both arg pointers are null, deal gracefully
- if (e1 == NULL) {
- result = (e2 == NULL) ? 0 : 1;
- } else if (e2 == NULL) {
- result = -1;
+ int result;
+
+ const HashEntry* e1 = *static_cast<HashEntry* const*>(arg1);
+ const HashEntry* e2 = *static_cast<HashEntry* const*>(arg2);
+
+ // if one or both arg pointers are null, deal gracefully
+ if (e1 == NULL) {
+ result = (e2 == NULL) ? 0 : 1;
+ } else if (e2 == NULL) {
+ result = -1;
+ } else {
+ size_t nbAlloc1 = e1->allocations;
+ size_t nbAlloc2 = e2->allocations;
+ size_t size1 = e1->size & ~SIZE_FLAG_MASK;
+ size_t size2 = e2->size & ~SIZE_FLAG_MASK;
+ size_t alloc1 = nbAlloc1 * size1;
+ size_t alloc2 = nbAlloc2 * size2;
+
+ // sort in descending order by:
+ // 1) total size
+ // 2) number of allocations
+ //
+ // This is used for sorting, not determination of equality, so we don't
+ // need to compare the bit flags.
+ if (alloc1 > alloc2) {
+ result = -1;
+ } else if (alloc1 < alloc2) {
+ result = 1;
} else {
- size_t nbAlloc1 = e1->allocations;
- size_t nbAlloc2 = e2->allocations;
- size_t size1 = e1->size & ~SIZE_FLAG_MASK;
- size_t size2 = e2->size & ~SIZE_FLAG_MASK;
- size_t alloc1 = nbAlloc1 * size1;
- size_t alloc2 = nbAlloc2 * size2;
-
- // sort in descending order by:
- // 1) total size
- // 2) number of allocations
- //
- // This is used for sorting, not determination of equality, so we don't
- // need to compare the bit flags.
- if (alloc1 > alloc2) {
- result = -1;
- } else if (alloc1 < alloc2) {
- result = 1;
- } else {
- if (nbAlloc1 > nbAlloc2) {
- result = -1;
- } else if (nbAlloc1 < nbAlloc2) {
- result = 1;
- } else {
- result = 0;
- }
- }
+ if (nbAlloc1 > nbAlloc2) {
+ result = -1;
+ } else if (nbAlloc1 < nbAlloc2) {
+ result = 1;
+ } else {
+ result = 0;
+ }
}
- return result;
+ }
+ return result;
}
-/*
- * Retrieve native heap information.
- *
- * "*info" is set to a buffer we allocate
- * "*overallSize" is set to the size of the "info" buffer
- * "*infoSize" is set to the size of a single entry
- * "*totalMemory" is set to the sum of all allocations we're tracking; does
- * not include heap overhead
- * "*backtraceSize" is set to the maximum number of entries in the back trace
- */
+// Retrieve native heap information.
+//
+// "*info" is set to a buffer we allocate
+// "*overallSize" is set to the size of the "info" buffer
+// "*infoSize" is set to the size of a single entry
+// "*totalMemory" is set to the sum of all allocations we're tracking; does
+// not include heap overhead
+// "*backtraceSize" is set to the maximum number of entries in the back trace
+// =============================================================================
// Exported for use by ddms.
+// =============================================================================
extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
- size_t* infoSize, size_t* totalMemory, size_t* backtraceSize) {
- // don't do anything if we have invalid arguments
- if (info == NULL || overallSize == NULL || infoSize == NULL ||
- totalMemory == NULL || backtraceSize == NULL) {
- return;
- }
- *totalMemory = 0;
-
- ScopedPthreadMutexLocker locker(&g_hash_table.lock);
+ size_t* infoSize, size_t* totalMemory, size_t* backtraceSize) {
+ // Don't do anything if we have invalid arguments.
+ if (info == NULL || overallSize == NULL || infoSize == NULL ||
+ totalMemory == NULL || backtraceSize == NULL) {
+ return;
+ }
+ *totalMemory = 0;
+
+ ScopedPthreadMutexLocker locker(&g_hash_table.lock);
+ if (g_hash_table.count == 0) {
+ *info = NULL;
+ *overallSize = 0;
+ *infoSize = 0;
+ *backtraceSize = 0;
+ return;
+ }
- if (g_hash_table.count == 0) {
- *info = NULL;
- *overallSize = 0;
- *infoSize = 0;
- *backtraceSize = 0;
- return;
+ HashEntry** list = static_cast<HashEntry**>(Malloc(malloc)(sizeof(void*) * g_hash_table.count));
+
+ // Get the entries into an array to be sorted.
+ size_t index = 0;
+ for (size_t i = 0 ; i < HASHTABLE_SIZE ; ++i) {
+ HashEntry* entry = g_hash_table.slots[i];
+ while (entry != NULL) {
+ list[index] = entry;
+ *totalMemory = *totalMemory + ((entry->size & ~SIZE_FLAG_MASK) * entry->allocations);
+ index++;
+ entry = entry->next;
}
+ }
- HashEntry** list = static_cast<HashEntry**>(Malloc(malloc)(sizeof(void*) * g_hash_table.count));
-
- // get the entries into an array to be sorted
- int index = 0;
- for (size_t i = 0 ; i < HASHTABLE_SIZE ; ++i) {
- HashEntry* entry = g_hash_table.slots[i];
- while (entry != NULL) {
- list[index] = entry;
- *totalMemory = *totalMemory +
- ((entry->size & ~SIZE_FLAG_MASK) * entry->allocations);
- index++;
- entry = entry->next;
- }
- }
+ // XXX: the protocol doesn't allow variable size for the stack trace (yet)
+ *infoSize = (sizeof(size_t) * 2) + (sizeof(uintptr_t) * BACKTRACE_SIZE);
+ *overallSize = *infoSize * g_hash_table.count;
+ *backtraceSize = BACKTRACE_SIZE;
- // XXX: the protocol doesn't allow variable size for the stack trace (yet)
- *infoSize = (sizeof(size_t) * 2) + (sizeof(uintptr_t) * BACKTRACE_SIZE);
- *overallSize = *infoSize * g_hash_table.count;
- *backtraceSize = BACKTRACE_SIZE;
+ // now get a byte array big enough for this
+ *info = static_cast<uint8_t*>(Malloc(malloc)(*overallSize));
+ if (*info == NULL) {
+ *overallSize = 0;
+ Malloc(free)(list);
+ return;
+ }
- // now get a byte array big enough for this
- *info = static_cast<uint8_t*>(Malloc(malloc)(*overallSize));
+ qsort(list, g_hash_table.count, sizeof(void*), hash_entry_compare);
- if (*info == NULL) {
- *overallSize = 0;
- Malloc(free)(list);
- return;
- }
-
- qsort(list, g_hash_table.count, sizeof(void*), hash_entry_compare);
-
- uint8_t* head = *info;
- const int count = g_hash_table.count;
- for (int i = 0 ; i < count ; ++i) {
- HashEntry* entry = list[i];
- size_t entrySize = (sizeof(size_t) * 2) + (sizeof(uintptr_t) * entry->numEntries);
- if (entrySize < *infoSize) {
- /* we're writing less than a full entry, clear out the rest */
- memset(head + entrySize, 0, *infoSize - entrySize);
- } else {
- /* make sure the amount we're copying doesn't exceed the limit */
- entrySize = *infoSize;
- }
- memcpy(head, &(entry->size), entrySize);
- head += *infoSize;
+ uint8_t* head = *info;
+ const size_t count = g_hash_table.count;
+ for (size_t i = 0 ; i < count ; ++i) {
+ HashEntry* entry = list[i];
+ size_t entrySize = (sizeof(size_t) * 2) + (sizeof(uintptr_t) * entry->numEntries);
+ if (entrySize < *infoSize) {
+ // We're writing less than a full entry, clear out the rest.
+ memset(head + entrySize, 0, *infoSize - entrySize);
+ } else {
+ // Make sure the amount we're copying doesn't exceed the limit.
+ entrySize = *infoSize;
}
+ memcpy(head, &(entry->size), entrySize);
+ head += *infoSize;
+ }
- Malloc(free)(list);
+ Malloc(free)(list);
}
-// Exported for use by ddms.
extern "C" void free_malloc_leak_info(uint8_t* info) {
- Malloc(free)(info);
+ Malloc(free)(info);
}
-extern "C" struct mallinfo mallinfo() {
- return Malloc(mallinfo)();
+// =============================================================================
+// Allocation functions
+// =============================================================================
+extern "C" void* calloc(size_t n_elements, size_t elem_size) {
+ return __libc_malloc_dispatch->calloc(n_elements, elem_size);
}
-extern "C" void* valloc(size_t bytes) {
- return Malloc(valloc)(bytes);
+extern "C" void free(void* mem) {
+ __libc_malloc_dispatch->free(mem);
}
-extern "C" void* pvalloc(size_t bytes) {
- return Malloc(pvalloc)(bytes);
+extern "C" struct mallinfo mallinfo() {
+ return __libc_malloc_dispatch->mallinfo();
}
-extern "C" int posix_memalign(void** memptr, size_t alignment, size_t size) {
- return Malloc(posix_memalign)(memptr, alignment, size);
+extern "C" void* malloc(size_t bytes) {
+ return __libc_malloc_dispatch->malloc(bytes);
}
-extern "C" void* malloc(size_t bytes) {
- return __libc_malloc_dispatch->malloc(bytes);
+extern "C" size_t malloc_usable_size(const void* mem) {
+ return __libc_malloc_dispatch->malloc_usable_size(mem);
}
-extern "C" void free(void* mem) {
- __libc_malloc_dispatch->free(mem);
+extern "C" void* memalign(size_t alignment, size_t bytes) {
+ return __libc_malloc_dispatch->memalign(alignment, bytes);
}
-extern "C" void* calloc(size_t n_elements, size_t elem_size) {
- return __libc_malloc_dispatch->calloc(n_elements, elem_size);
+extern "C" int posix_memalign(void** memptr, size_t alignment, size_t size) {
+ return __libc_malloc_dispatch->posix_memalign(memptr, alignment, size);
}
-extern "C" void* realloc(void* oldMem, size_t bytes) {
- return __libc_malloc_dispatch->realloc(oldMem, bytes);
+extern "C" void* pvalloc(size_t bytes) {
+ return __libc_malloc_dispatch->pvalloc(bytes);
}
-extern "C" void* memalign(size_t alignment, size_t bytes) {
- return __libc_malloc_dispatch->memalign(alignment, bytes);
+extern "C" void* realloc(void* oldMem, size_t bytes) {
+ return __libc_malloc_dispatch->realloc(oldMem, bytes);
}
-extern "C" size_t malloc_usable_size(const void* mem) {
- return __libc_malloc_dispatch->malloc_usable_size(mem);
+extern "C" void* valloc(size_t bytes) {
+ return __libc_malloc_dispatch->valloc(bytes);
}
-/* We implement malloc debugging only in libc.so, so code below
- * must be excluded if we compile this file for static libc.a
- */
+// We implement malloc debugging only in libc.so, so the code below
+// must be excluded if we compile this file for static libc.a
#ifndef LIBC_STATIC
#include <sys/system_properties.h>
#include <dlfcn.h>
@@ -275,227 +280,222 @@ extern "C" size_t malloc_usable_size(const void* mem) {
template<typename FunctionType>
static void InitMallocFunction(void* malloc_impl_handler, FunctionType* func, const char* prefix, const char* suffix) {
- char symbol[128];
- snprintf(symbol, sizeof(symbol), "%s_%s", prefix, suffix);
- *func = reinterpret_cast<FunctionType>(dlsym(malloc_impl_handler, symbol));
- if (*func == NULL) {
- error_log("%s: dlsym(\"%s\") failed", getprogname(), symbol);
- }
+ char symbol[128];
+ snprintf(symbol, sizeof(symbol), "%s_%s", prefix, suffix);
+ *func = reinterpret_cast<FunctionType>(dlsym(malloc_impl_handler, symbol));
+ if (*func == NULL) {
+ error_log("%s: dlsym(\"%s\") failed", getprogname(), symbol);
+ }
}
static void InitMalloc(void* malloc_impl_handler, MallocDebug* table, const char* prefix) {
- __libc_format_log(ANDROID_LOG_INFO, "libc", "%s: using libc.debug.malloc %d (%s)\n",
- getprogname(), g_malloc_debug_level, prefix);
-
- InitMallocFunction<MallocDebugMalloc>(malloc_impl_handler, &table->malloc, prefix, "malloc");
- InitMallocFunction<MallocDebugFree>(malloc_impl_handler, &table->free, prefix, "free");
- InitMallocFunction<MallocDebugCalloc>(malloc_impl_handler, &table->calloc, prefix, "calloc");
- InitMallocFunction<MallocDebugRealloc>(malloc_impl_handler, &table->realloc, prefix, "realloc");
- InitMallocFunction<MallocDebugMemalign>(malloc_impl_handler, &table->memalign, prefix, "memalign");
- InitMallocFunction<MallocDebugMallocUsableSize>(malloc_impl_handler, &table->malloc_usable_size, prefix, "malloc_usable_size");
+ __libc_format_log(ANDROID_LOG_INFO, "libc", "%s: using libc.debug.malloc %d (%s)\n",
+ getprogname(), g_malloc_debug_level, prefix);
+
+ InitMallocFunction<MallocDebugCalloc>(malloc_impl_handler, &table->calloc, prefix, "calloc");
+ InitMallocFunction<MallocDebugFree>(malloc_impl_handler, &table->free, prefix, "free");
+ InitMallocFunction<MallocDebugMallinfo>(malloc_impl_handler, &table->mallinfo, prefix, "mallinfo");
+ InitMallocFunction<MallocDebugMalloc>(malloc_impl_handler, &table->malloc, prefix, "malloc");
+ InitMallocFunction<MallocDebugMallocUsableSize>(malloc_impl_handler, &table->malloc_usable_size, prefix, "malloc_usable_size");
+ InitMallocFunction<MallocDebugMemalign>(malloc_impl_handler, &table->memalign, prefix, "memalign");
+ InitMallocFunction<MallocDebugPosixMemalign>(malloc_impl_handler, &table->posix_memalign, prefix, "posix_memalign");
+ InitMallocFunction<MallocDebugPvalloc>(malloc_impl_handler, &table->pvalloc, prefix, "pvalloc");
+ InitMallocFunction<MallocDebugRealloc>(malloc_impl_handler, &table->realloc, prefix, "realloc");
+ InitMallocFunction<MallocDebugValloc>(malloc_impl_handler, &table->valloc, prefix, "valloc");
}
-/* Initializes memory allocation framework once per process. */
+// Initializes memory allocation framework once per process.
static void malloc_init_impl() {
- const char* so_name = NULL;
- MallocDebugInit malloc_debug_initialize = NULL;
- unsigned int qemu_running = 0;
- unsigned int memcheck_enabled = 0;
- char env[PROP_VALUE_MAX];
- char memcheck_tracing[PROP_VALUE_MAX];
- char debug_program[PROP_VALUE_MAX];
-
- /* Get custom malloc debug level. Note that emulator started with
- * memory checking option will have priority over debug level set in
- * libc.debug.malloc system property. */
- if (__system_property_get("ro.kernel.qemu", env) && atoi(env)) {
- qemu_running = 1;
- if (__system_property_get("ro.kernel.memcheck", memcheck_tracing)) {
- if (memcheck_tracing[0] != '0') {
- // Emulator has started with memory tracing enabled. Enforce it.
- g_malloc_debug_level = 20;
- memcheck_enabled = 1;
- }
- }
- }
-
- /* If debug level has not been set by memcheck option in the emulator,
- * lets grab it from libc.debug.malloc system property. */
- if (g_malloc_debug_level == 0 && __system_property_get("libc.debug.malloc", env)) {
- g_malloc_debug_level = atoi(env);
- }
-
- /* Debug level 0 means that we should use default allocation routines. */
- if (g_malloc_debug_level == 0) {
- return;
+ const char* so_name = NULL;
+ MallocDebugInit malloc_debug_initialize = NULL;
+ unsigned int qemu_running = 0;
+ unsigned int memcheck_enabled = 0;
+ char env[PROP_VALUE_MAX];
+ char memcheck_tracing[PROP_VALUE_MAX];
+ char debug_program[PROP_VALUE_MAX];
+
+ // Get custom malloc debug level. Note that emulator started with
+ // memory checking option will have priority over debug level set in
+ // libc.debug.malloc system property.
+ if (__system_property_get("ro.kernel.qemu", env) && atoi(env)) {
+ qemu_running = 1;
+ if (__system_property_get("ro.kernel.memcheck", memcheck_tracing)) {
+ if (memcheck_tracing[0] != '0') {
+ // Emulator has started with memory tracing enabled. Enforce it.
+ g_malloc_debug_level = 20;
+ memcheck_enabled = 1;
+ }
}
+ }
- /* If libc.debug.malloc.program is set and is not a substring of progname,
- * then exit.
- */
- if (__system_property_get("libc.debug.malloc.program", debug_program)) {
- if (!strstr(getprogname(), debug_program)) {
- return;
- }
- }
+ // If debug level has not been set by memcheck option in the emulator,
+ // lets grab it from libc.debug.malloc system property.
+ if (g_malloc_debug_level == 0 && __system_property_get("libc.debug.malloc", env)) {
+ g_malloc_debug_level = atoi(env);
+ }
- // mksh is way too leaky. http://b/7291287.
- if (g_malloc_debug_level >= 10) {
- if (strcmp(getprogname(), "sh") == 0 || strcmp(getprogname(), "/system/bin/sh") == 0) {
- return;
- }
- }
+ // Debug level 0 means that we should use default allocation routines.
+ if (g_malloc_debug_level == 0) {
+ return;
+ }
- // Choose the appropriate .so for the requested debug level.
- switch (g_malloc_debug_level) {
- case 1:
- case 5:
- case 10:
- so_name = "libc_malloc_debug_leak.so";
- break;
- case 20:
- // Quick check: debug level 20 can only be handled in emulator.
- if (!qemu_running) {
- error_log("%s: Debug level %d can only be set in emulator\n",
- getprogname(), g_malloc_debug_level);
- return;
- }
- // Make sure that memory checking has been enabled in emulator.
- if (!memcheck_enabled) {
- error_log("%s: Memory checking is not enabled in the emulator\n",
- getprogname());
- return;
- }
- so_name = "libc_malloc_debug_qemu.so";
- break;
- default:
- error_log("%s: Debug level %d is unknown\n", getprogname(), g_malloc_debug_level);
- return;
+ // If libc.debug.malloc.program is set and is not a substring of progname,
+ // then exit.
+ if (__system_property_get("libc.debug.malloc.program", debug_program)) {
+ if (!strstr(getprogname(), debug_program)) {
+ return;
}
+ }
- // Load .so that implements the required malloc debugging functionality.
- void* malloc_impl_handle = dlopen(so_name, RTLD_LAZY);
- if (malloc_impl_handle == NULL) {
- error_log("%s: Missing module %s required for malloc debug level %d: %s",
- getprogname(), so_name, g_malloc_debug_level, dlerror());
- return;
+ // mksh is way too leaky. http://b/7291287.
+ if (g_malloc_debug_level >= 10) {
+ if (strcmp(getprogname(), "sh") == 0 || strcmp(getprogname(), "/system/bin/sh") == 0) {
+ return;
}
+ }
- // Initialize malloc debugging in the loaded module.
- malloc_debug_initialize = reinterpret_cast<MallocDebugInit>(dlsym(malloc_impl_handle,
- "malloc_debug_initialize"));
- if (malloc_debug_initialize == NULL) {
- error_log("%s: Initialization routine is not found in %s\n",
- getprogname(), so_name);
- dlclose(malloc_impl_handle);
+ // Choose the appropriate .so for the requested debug level.
+ switch (g_malloc_debug_level) {
+ case 1:
+ case 5:
+ case 10:
+ so_name = "libc_malloc_debug_leak.so";
+ break;
+ case 20:
+ // Quick check: debug level 20 can only be handled in emulator.
+ if (!qemu_running) {
+ error_log("%s: Debug level %d can only be set in emulator\n",
+ getprogname(), g_malloc_debug_level);
return;
- }
- if (malloc_debug_initialize(&g_hash_table) == -1) {
- dlclose(malloc_impl_handle);
+ }
+ // Make sure that memory checking has been enabled in emulator.
+ if (!memcheck_enabled) {
+ error_log("%s: Memory checking is not enabled in the emulator\n", getprogname());
return;
- }
+ }
+ so_name = "libc_malloc_debug_qemu.so";
+ break;
+ default:
+ error_log("%s: Debug level %d is unknown\n", getprogname(), g_malloc_debug_level);
+ return;
+ }
- if (g_malloc_debug_level == 20) {
- // For memory checker we need to do extra initialization.
- typedef int (*MemCheckInit)(int, const char*);
- MemCheckInit memcheck_initialize =
- reinterpret_cast<MemCheckInit>(dlsym(malloc_impl_handle,
- "memcheck_initialize"));
- if (memcheck_initialize == NULL) {
- error_log("%s: memcheck_initialize routine is not found in %s\n",
- getprogname(), so_name);
- dlclose(malloc_impl_handle);
- return;
- }
-
- if (memcheck_initialize(MALLOC_ALIGNMENT, memcheck_tracing)) {
- dlclose(malloc_impl_handle);
- return;
- }
- }
+ // Load .so that implements the required malloc debugging functionality.
+ void* malloc_impl_handle = dlopen(so_name, RTLD_LAZY);
+ if (malloc_impl_handle == NULL) {
+ error_log("%s: Missing module %s required for malloc debug level %d: %s",
+ getprogname(), so_name, g_malloc_debug_level, dlerror());
+ return;
+ }
- // Initialize malloc dispatch table with appropriate routines.
- static MallocDebug malloc_dispatch_table __attribute__((aligned(32))) = {
- Malloc(malloc),
- Malloc(free),
- Malloc(calloc),
- Malloc(realloc),
- Malloc(memalign),
- Malloc(malloc_usable_size)
- };
-
- switch (g_malloc_debug_level) {
- case 1:
- InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "leak");
- break;
- case 5:
- InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "fill");
- break;
- case 10:
- InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "chk");
- break;
- case 20:
- InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "qemu_instrumented");
- break;
- default:
- break;
+ // Initialize malloc debugging in the loaded module.
+ malloc_debug_initialize = reinterpret_cast<MallocDebugInit>(dlsym(malloc_impl_handle,
+ "malloc_debug_initialize"));
+ if (malloc_debug_initialize == NULL) {
+ error_log("%s: Initialization routine is not found in %s\n", getprogname(), so_name);
+ dlclose(malloc_impl_handle);
+ return;
+ }
+ if (malloc_debug_initialize(&g_hash_table) == -1) {
+ dlclose(malloc_impl_handle);
+ return;
+ }
+
+ if (g_malloc_debug_level == 20) {
+ // For memory checker we need to do extra initialization.
+ typedef int (*MemCheckInit)(int, const char*);
+ MemCheckInit memcheck_initialize =
+ reinterpret_cast<MemCheckInit>(dlsym(malloc_impl_handle, "memcheck_initialize"));
+ if (memcheck_initialize == NULL) {
+ error_log("%s: memcheck_initialize routine is not found in %s\n",
+ getprogname(), so_name);
+ dlclose(malloc_impl_handle);
+ return;
}
- // Make sure dispatch table is initialized
- if ((malloc_dispatch_table.malloc == NULL) ||
- (malloc_dispatch_table.free == NULL) ||
- (malloc_dispatch_table.calloc == NULL) ||
- (malloc_dispatch_table.realloc == NULL) ||
- (malloc_dispatch_table.memalign == NULL) ||
- (malloc_dispatch_table.malloc_usable_size == NULL)) {
- error_log("%s: some symbols for libc.debug.malloc level %d were not found (see above)",
- getprogname(), g_malloc_debug_level);
- dlclose(malloc_impl_handle);
- } else {
- __libc_malloc_dispatch = &malloc_dispatch_table;
- libc_malloc_impl_handle = malloc_impl_handle;
+ if (memcheck_initialize(MALLOC_ALIGNMENT, memcheck_tracing)) {
+ dlclose(malloc_impl_handle);
+ return;
}
+ }
+
+ // No need to init the dispatch table because we can only get
+ // here if debug level is 1, 5, 10, or 20.
+ static MallocDebug malloc_dispatch_table __attribute__((aligned(32)));
+ switch (g_malloc_debug_level) {
+ case 1:
+ InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "leak");
+ break;
+ case 5:
+ InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "fill");
+ break;
+ case 10:
+ InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "chk");
+ break;
+ case 20:
+ InitMalloc(malloc_impl_handle, &malloc_dispatch_table, "qemu_instrumented");
+ break;
+ default:
+ break;
+ }
+
+ // Make sure dispatch table is initialized
+ if ((malloc_dispatch_table.calloc == NULL) ||
+ (malloc_dispatch_table.free == NULL) ||
+ (malloc_dispatch_table.mallinfo == NULL) ||
+ (malloc_dispatch_table.malloc == NULL) ||
+ (malloc_dispatch_table.malloc_usable_size == NULL) ||
+ (malloc_dispatch_table.memalign == NULL) ||
+ (malloc_dispatch_table.posix_memalign == NULL) ||
+ (malloc_dispatch_table.pvalloc == NULL) ||
+ (malloc_dispatch_table.realloc == NULL) ||
+ (malloc_dispatch_table.valloc == NULL)) {
+ error_log("%s: some symbols for libc.debug.malloc level %d were not found (see above)",
+ getprogname(), g_malloc_debug_level);
+ dlclose(malloc_impl_handle);
+ } else {
+ __libc_malloc_dispatch = &malloc_dispatch_table;
+ libc_malloc_impl_handle = malloc_impl_handle;
+ }
}
static void malloc_fini_impl() {
- // Our BSD stdio implementation doesn't close the standard streams, it only flushes them.
- // And it doesn't do that until its atexit handler is run, and we run first!
- // It's great that other unclosed FILE*s show up as malloc leaks, but we need to manually
- // clean up the standard streams ourselves.
- fclose(stdin);
- fclose(stdout);
- fclose(stderr);
-
- if (libc_malloc_impl_handle != NULL) {
- MallocDebugFini malloc_debug_finalize =
- reinterpret_cast<MallocDebugFini>(dlsym(libc_malloc_impl_handle,
- "malloc_debug_finalize"));
- if (malloc_debug_finalize != NULL) {
- malloc_debug_finalize(g_malloc_debug_level);
- }
+ // Our BSD stdio implementation doesn't close the standard streams, it only flushes them.
+ // And it doesn't do that until its atexit handler is run, and we run first!
+ // It's great that other unclosed FILE*s show up as malloc leaks, but we need to manually
+ // clean up the standard streams ourselves.
+ fclose(stdin);
+ fclose(stdout);
+ fclose(stderr);
+
+ if (libc_malloc_impl_handle != NULL) {
+ MallocDebugFini malloc_debug_finalize =
+ reinterpret_cast<MallocDebugFini>(dlsym(libc_malloc_impl_handle, "malloc_debug_finalize"));
+ if (malloc_debug_finalize != NULL) {
+ malloc_debug_finalize(g_malloc_debug_level);
}
+ }
}
#endif // !LIBC_STATIC
-/* Initializes memory allocation framework.
- * This routine is called from __libc_init routines implemented
- * in libc_init_static.c and libc_init_dynamic.c files.
- */
+// Initializes memory allocation framework.
+// This routine is called from __libc_init routines implemented
+// in libc_init_static.c and libc_init_dynamic.c files.
extern "C" __LIBC_HIDDEN__ void malloc_debug_init() {
-#if defined(USE_DL_PREFIX) && !defined(LIBC_STATIC)
+#if !defined(LIBC_STATIC)
static pthread_once_t malloc_init_once_ctl = PTHREAD_ONCE_INIT;
if (pthread_once(&malloc_init_once_ctl, malloc_init_impl)) {
error_log("Unable to initialize malloc_debug component.");
}
-#endif // USE_DL_PREFIX && !LIBC_STATIC
+#endif // !LIBC_STATIC
}
extern "C" __LIBC_HIDDEN__ void malloc_debug_fini() {
-#if defined(USE_DL_PREFIX) && !defined(LIBC_STATIC)
+#if !defined(LIBC_STATIC)
static pthread_once_t malloc_fini_once_ctl = PTHREAD_ONCE_INIT;
if (pthread_once(&malloc_fini_once_ctl, malloc_fini_impl)) {
error_log("Unable to finalize malloc_debug component.");
}
-#endif // USE_DL_PREFIX && !LIBC_STATIC
+#endif // !LIBC_STATIC
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-17 19:00:27 +0000