Add support for M_PURGE_ALL.
This is a new mallopt option that will force purge absolutely
everything no matter how long it takes to purge.
Wrote a unit test for the new mallopt, and added a test to help
verify that new mallopt parameters do not conflict with each other.
Modified some benchmarks to use this new parameter so that we can
get better RSS data.
Added a new M_PURGE_ALL benchmark.
Bug: 243851006
Test: All unit tests pass.
Test: Ran changed benchmarks.
Change-Id: I1b46a5e6253538108e052d11ee46fd513568adec
diff --git a/benchmarks/malloc_map_benchmark.cpp b/benchmarks/malloc_map_benchmark.cpp
index ba4d62c..5757325 100644
--- a/benchmarks/malloc_map_benchmark.cpp
+++ b/benchmarks/malloc_map_benchmark.cpp
@@ -69,7 +69,7 @@
for (auto _ : state) {
#if defined(__BIONIC__)
state.PauseTiming();
- mallopt(M_PURGE, 0);
+ mallopt(M_PURGE_ALL, 0);
uint64_t rss_bytes_before = 0;
Gather(&rss_bytes_before);
state.ResumeTiming();
@@ -80,7 +80,7 @@
}
#if defined(__BIONIC__)
state.PauseTiming();
- mallopt(M_PURGE, 0);
+ mallopt(M_PURGE_ALL, 0);
Gather(&rss_bytes);
// Try and record only the memory used in the map.
rss_bytes -= rss_bytes_before;