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Treat the process stack as the top of memory for free space histograms.

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Because we can't determine the top of userspace mappable memory
directly, we rely on the fact that the process stack is allocated at the
top of the address space (minus some randomization). Anything after that
should not count as free space.

BUG=695382

Change-Id: I68453aac9732c2bd4b87236b234518068dec6640
Reviewed-on: https://chromium-review.googlesource.com/446100
Reviewed-by: Primiano Tucci <primiano@chromium.org>
This commit is contained in:
Tobias Sargeant
2017-03-29 11:41:05 +01:00
committed by Tobias Sargeant
parent 219d0b15c4
commit 846b6335c5
2 changed files with 22 additions and 1 deletions
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7
src/client/linux/minidump_writer/linux_dumper.h
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@@ -99,6 +99,13 @@ class LinuxDumper {
// Returns true on success. One must have called |ThreadsSuspend| first.
virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info) = 0;
size_t GetMainThreadIndex() const {
for (size_t i = 0; i < threads_.size(); ++i) {
if (threads_[i] == pid_) return i;
}
return -1u;
}
// These are only valid after a call to |Init|.
const wasteful_vector<pid_t> &threads() { return threads_; }
const wasteful_vector<MappingInfo*> &mappings() { return mappings_; }