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| author | pliard@chromium.org <pliard@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-11-14 11:00:30 +0000 |
|---|---|---|
| committer | pliard@chromium.org <pliard@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-11-14 11:00:30 +0000 |
| commit | 787b3c6b95890fe128c642bcdfcd8bb0060846d7 (patch) | |
| tree | 54b194439340329aa808cc3579bbdb90fdc5130a /third_party | |
| parent | ff2bd1be8e8b7b6d10018cf654e676890a02898b (diff) | |
| download | chromium_src-787b3c6b95890fe128c642bcdfcd8bb0060846d7.zip chromium_src-787b3c6b95890fe128c642bcdfcd8bb0060846d7.tar.gz chromium_src-787b3c6b95890fe128c642bcdfcd8bb0060846d7.tar.bz2 | |
Purge unpinned ashmem before parsing /proc/$pid/smaps.
This will help stabilize memory measurements so that memory regressions can't
be hidden when unpinned ashmem gets purged by the kernel.
BUG=311633
Review URL: https://codereview.chromium.org/52833002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235115 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'third_party')
| -rw-r--r-- | third_party/ashmem/ashmem-dev.c | 10 | ||||
| -rw-r--r-- | third_party/ashmem/ashmem.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/third_party/ashmem/ashmem-dev.c b/third_party/ashmem/ashmem-dev.c index 1cfdfe0..2303369 100644 --- a/third_party/ashmem/ashmem-dev.c +++ b/third_party/ashmem/ashmem-dev.c @@ -88,3 +88,13 @@ int ashmem_get_size_region(int fd) { return ioctl(fd, ASHMEM_GET_SIZE, NULL); } + +int ashmem_purge_all(void) +{ + const int fd = open(ASHMEM_DEVICE, O_RDWR); + if (fd < 0) + return fd; + const int ret = ioctl(fd, ASHMEM_PURGE_ALL_CACHES, 0); + close(fd); + return ret; +} diff --git a/third_party/ashmem/ashmem.h b/third_party/ashmem/ashmem.h index 708dd45..7d411cc 100644 --- a/third_party/ashmem/ashmem.h +++ b/third_party/ashmem/ashmem.h @@ -21,6 +21,7 @@ int ashmem_set_prot_region(int fd, int prot); int ashmem_pin_region(int fd, size_t offset, size_t len); int ashmem_unpin_region(int fd, size_t offset, size_t len); int ashmem_get_size_region(int fd); +int ashmem_purge_all(void); #ifdef __cplusplus } |