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libprocessgroup: Deliberately leak TaskProfiles and CgroupMap instances. 

This avoids a race between destruction on process exit and concurrent
access from another thread.

Bug: 129023204
Change-Id: Iecafa67a78e2cce53687156e7f91547b4a23ec13
This commit is contained in:
Peter Collingbourne 2019-03-20 21:09:46 -07:00 committed by Suren Baghdasaryan
parent c3e96512c0
commit dba6d44376
2 changed files with 8 additions and 4 deletions
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6
libprocessgroup/cgroup_map.cpp
View File

@ -336,8 +336,10 @@ CgroupMap::~CgroupMap() {
}
CgroupMap& CgroupMap::GetInstance() {
static CgroupMap instance;
return instance;
// Deliberately leak this object to avoid a race between destruction on
// process exit and concurrent access from another thread.
static auto* instance = new CgroupMap;
return *instance;
}
bool CgroupMap::LoadRcFile() {

6
libprocessgroup/task_profiles.cpp
View File

@ -284,8 +284,10 @@ bool TaskProfile::ExecuteForTask(int tid) const {
}
TaskProfiles& TaskProfiles::GetInstance() {
static TaskProfiles instance;
return instance;
// Deliberately leak this object to avoid a race between destruction on
// process exit and concurrent access from another thread.
static auto* instance = new TaskProfiles;
return *instance;
}
TaskProfiles::TaskProfiles() {