cpp/systemcounters/MappingAggregator.cpp (50 lines of code) (raw):
/**
* Copyright 2004-present, Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <procmaps.h>
#include <profilo/systemcounters/MappingAggregator.h>
namespace facebook {
namespace profilo {
namespace counters {
namespace {
struct MemorymapSnapshot {
MemorymapSnapshot(struct memorymap* vma) : vma_(vma) {}
~MemorymapSnapshot() {
if (vma_ != nullptr) {
memorymap_destroy(vma_);
}
}
struct memorymap* vma_;
};
} // namespace
bool MappingAggregator::refresh() {
gl_dev_ = dmabuf_ = -1;
auto* snapshot = memorymap_snapshot(getpid());
if (!snapshot) {
return false;
}
MemorymapSnapshot raiisnapshot{snapshot};
gl_dev_ = dmabuf_ = 0;
for (auto* vma = memorymap_first_vma(snapshot); vma != nullptr;
vma = memorymap_vma_next(vma)) {
auto* file = memorymap_vma_file(vma);
if (file == nullptr) {
continue;
}
auto size = memorymap_vma_end(vma) - memorymap_vma_start(vma);
constexpr static char kDevKgsl[] = "/dev/kgsl-3d0";
constexpr static char kAnonInodeDmabuf[] = "anon_inode:dmabuf";
if (strncmp(file, kDevKgsl, strlen(kDevKgsl)) == 0) {
gl_dev_ += size;
} else if (strncmp(file, kAnonInodeDmabuf, strlen(kAnonInodeDmabuf)) == 0) {
dmabuf_ += size;
}
}
return true;
}
ssize_t MappingAggregator::getGLDevSize() {
return gl_dev_;
}
ssize_t MappingAggregator::getDmabufSize() {
return dmabuf_;
}
} // namespace counters
} // namespace profilo
} // namespace facebook