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DEFINITIONS
This source file includes following definitions.
- InstanceTypeToString
- ReadPointedValue
- ReadArray
- ReadArrayFrom
- toM
- DumpHeapStats
- main
// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>
#include <google_breakpad/processor/minidump.h>
#define ENABLE_DEBUGGER_SUPPORT
#include <v8.h>
namespace {
using google_breakpad::Minidump;
using google_breakpad::MinidumpContext;
using google_breakpad::MinidumpThread;
using google_breakpad::MinidumpThreadList;
using google_breakpad::MinidumpException;
using google_breakpad::MinidumpMemoryRegion;
const char* InstanceTypeToString(int type) {
static char const* names[v8::internal::LAST_TYPE] = {0};
if (names[v8::internal::STRING_TYPE] == NULL) {
using namespace v8::internal;
#define SET(type) names[type] = #type;
INSTANCE_TYPE_LIST(SET)
#undef SET
}
return names[type];
}
u_int32_t ReadPointedValue(MinidumpMemoryRegion* region,
u_int64_t base,
int offset) {
u_int32_t ptr = 0;
CHECK(region->GetMemoryAtAddress(base + 4 * offset, &ptr));
u_int32_t value = 0;
CHECK(region->GetMemoryAtAddress(ptr, &value));
return value;
}
void ReadArray(MinidumpMemoryRegion* region,
u_int64_t array_ptr,
int size,
int* output) {
for (int i = 0; i < size; i++) {
u_int32_t value;
CHECK(region->GetMemoryAtAddress(array_ptr + 4 * i, &value));
output[i] = value;
}
}
u_int32_t ReadArrayFrom(MinidumpMemoryRegion* region,
u_int64_t base,
int offset,
int size,
int* output) {
u_int32_t ptr = 0;
CHECK(region->GetMemoryAtAddress(base + 4 * offset, &ptr));
ReadArray(region, ptr, size, output);
}
double toM(int size) {
return size / (1024. * 1024.);
}
class IndirectSorter {
public:
explicit IndirectSorter(int* a) : a_(a) { }
bool operator() (int i0, int i1) {
return a_[i0] > a_[i1];
}
private:
int* a_;
};
void DumpHeapStats(const char *minidump_file) {
Minidump minidump(minidump_file);
CHECK(minidump.Read());
MinidumpException *exception = minidump.GetException();
CHECK(exception);
MinidumpContext* crash_context = exception->GetContext();
CHECK(crash_context);
u_int32_t exception_thread_id = 0;
CHECK(exception->GetThreadID(&exception_thread_id));
MinidumpThreadList* thread_list = minidump.GetThreadList();
CHECK(thread_list);
MinidumpThread* exception_thread =
thread_list->GetThreadByID(exception_thread_id);
CHECK(exception_thread);
// Currently only 32-bit Windows minidumps are supported.
CHECK_EQ(MD_CONTEXT_X86, crash_context->GetContextCPU());
const MDRawContextX86* contextX86 = crash_context->GetContextX86();
CHECK(contextX86);
const u_int32_t esp = contextX86->esp;
MinidumpMemoryRegion* memory_region = exception_thread->GetMemory();
CHECK(memory_region);
const u_int64_t last = memory_region->GetBase() + memory_region->GetSize();
u_int64_t heap_stats_addr = 0;
for (u_int64_t addr = esp; addr < last; addr += 4) {
u_int32_t value = 0;
CHECK(memory_region->GetMemoryAtAddress(addr, &value));
if (value >= esp && value < last) {
u_int32_t value2 = 0;
CHECK(memory_region->GetMemoryAtAddress(value, &value2));
if (value2 == v8::internal::HeapStats::kStartMarker) {
heap_stats_addr = addr;
break;
}
}
}
CHECK(heap_stats_addr);
// Read heap stats.
#define READ_FIELD(offset) \
ReadPointedValue(memory_region, heap_stats_addr, offset)
CHECK(READ_FIELD(0) == v8::internal::HeapStats::kStartMarker);
CHECK(READ_FIELD(24) == v8::internal::HeapStats::kEndMarker);
const int new_space_size = READ_FIELD(1);
const int new_space_capacity = READ_FIELD(2);
const int old_pointer_space_size = READ_FIELD(3);
const int old_pointer_space_capacity = READ_FIELD(4);
const int old_data_space_size = READ_FIELD(5);
const int old_data_space_capacity = READ_FIELD(6);
const int code_space_size = READ_FIELD(7);
const int code_space_capacity = READ_FIELD(8);
const int map_space_size = READ_FIELD(9);
const int map_space_capacity = READ_FIELD(10);
const int cell_space_size = READ_FIELD(11);
const int cell_space_capacity = READ_FIELD(12);
const int lo_space_size = READ_FIELD(13);
const int global_handle_count = READ_FIELD(14);
const int weak_global_handle_count = READ_FIELD(15);
const int pending_global_handle_count = READ_FIELD(16);
const int near_death_global_handle_count = READ_FIELD(17);
const int destroyed_global_handle_count = READ_FIELD(18);
const int memory_allocator_size = READ_FIELD(19);
const int memory_allocator_capacity = READ_FIELD(20);
const int os_error = READ_FIELD(23);
#undef READ_FIELD
int objects_per_type[v8::internal::LAST_TYPE + 1] = {0};
ReadArrayFrom(memory_region, heap_stats_addr, 21,
v8::internal::LAST_TYPE + 1, objects_per_type);
int size_per_type[v8::internal::LAST_TYPE + 1] = {0};
ReadArrayFrom(memory_region, heap_stats_addr, 22, v8::internal::LAST_TYPE + 1,
size_per_type);
int js_global_objects =
objects_per_type[v8::internal::JS_GLOBAL_OBJECT_TYPE];
int js_builtins_objects =
objects_per_type[v8::internal::JS_BUILTINS_OBJECT_TYPE];
int js_global_proxies =
objects_per_type[v8::internal::JS_GLOBAL_PROXY_TYPE];
int indices[v8::internal::LAST_TYPE + 1];
for (int i = 0; i <= v8::internal::LAST_TYPE; i++) {
indices[i] = i;
}
std::stable_sort(indices, indices + sizeof(indices)/sizeof(indices[0]),
IndirectSorter(size_per_type));
int total_size = 0;
for (int i = 0; i <= v8::internal::LAST_TYPE; i++) {
total_size += size_per_type[i];
}
// Print heap stats.
printf("exception thread ID: %" PRIu32 " (%#" PRIx32 ")\n",
exception_thread_id, exception_thread_id);
printf("heap stats address: %#" PRIx64 "\n", heap_stats_addr);
#define PRINT_INT_STAT(stat) \
printf("\t%-25s\t% 10d\n", #stat ":", stat);
#define PRINT_MB_STAT(stat) \
printf("\t%-25s\t% 10.3f MB\n", #stat ":", toM(stat));
PRINT_MB_STAT(new_space_size);
PRINT_MB_STAT(new_space_capacity);
PRINT_MB_STAT(old_pointer_space_size);
PRINT_MB_STAT(old_pointer_space_capacity);
PRINT_MB_STAT(old_data_space_size);
PRINT_MB_STAT(old_data_space_capacity);
PRINT_MB_STAT(code_space_size);
PRINT_MB_STAT(code_space_capacity);
PRINT_MB_STAT(map_space_size);
PRINT_MB_STAT(map_space_capacity);
PRINT_MB_STAT(cell_space_size);
PRINT_MB_STAT(cell_space_capacity);
PRINT_MB_STAT(lo_space_size);
PRINT_INT_STAT(global_handle_count);
PRINT_INT_STAT(weak_global_handle_count);
PRINT_INT_STAT(pending_global_handle_count);
PRINT_INT_STAT(near_death_global_handle_count);
PRINT_INT_STAT(destroyed_global_handle_count);
PRINT_MB_STAT(memory_allocator_size);
PRINT_MB_STAT(memory_allocator_capacity);
PRINT_INT_STAT(os_error);
#undef PRINT_STAT
printf("\n");
printf(
"\tJS_GLOBAL_OBJECT_TYPE/JS_BUILTINS_OBJECT_TYPE/JS_GLOBAL_PROXY_TYPE: "
"%d/%d/%d\n\n",
js_global_objects, js_builtins_objects, js_global_proxies);
int running_size = 0;
for (int i = 0; i <= v8::internal::LAST_TYPE; i++) {
int type = indices[i];
const char* name = InstanceTypeToString(type);
if (name == NULL) {
// Unknown instance type. Check that there is no objects of that type.
CHECK_EQ(0, objects_per_type[type]);
CHECK_EQ(0, size_per_type[type]);
continue;
}
int size = size_per_type[type];
running_size += size;
printf("\t%-37s% 9d% 11.3f MB% 10.3f%%% 10.3f%%\n",
name, objects_per_type[type], toM(size),
100. * size / total_size, 100. * running_size / total_size);
}
printf("\t%-37s% 9d% 11.3f MB% 10.3f%%% 10.3f%%\n",
"total", 0, toM(total_size), 100., 100.);
}
} // namespace
int main(int argc, char **argv) {
if (argc != 2) {
fprintf(stderr, "usage: %s <minidump>\n", argv[0]);
return 1;
}
DumpHeapStats(argv[1]);
return 0;
}