Parse /proc/<pid>/stats fields as int64
Some entries are 64 bits wide, and will overflow on occasion. In particular,
VM_STARTTIME will overflow a 32-bit int on long-running systems.
BUG=332491
TEST=local build, run on desktop Linux
Review URL: https://codereview.chromium.org/129353002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243733 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/process/internal_linux.h b/base/process/internal_linux.h
index 0cacd3f..5fc3356 100644
--- a/base/process/internal_linux.h
+++ b/base/process/internal_linux.h
@@ -63,19 +63,18 @@
// Reads the |field_num|th field from |proc_stats|. Returns 0 on failure.
// This version does not handle the first 3 values, since the first value is
// simply |pid|, and the next two values are strings.
-int GetProcStatsFieldAsInt(const std::vector<std::string>& proc_stats,
- ProcStatsFields field_num);
+int64 GetProcStatsFieldAsInt64(const std::vector<std::string>& proc_stats,
+ ProcStatsFields field_num);
-// Same as GetProcStatsFieldAsInt(), but for size_t values.
+// Same as GetProcStatsFieldAsInt64(), but for size_t values.
size_t GetProcStatsFieldAsSizeT(const std::vector<std::string>& proc_stats,
ProcStatsFields field_num);
-// Convenience wrapper around GetProcStatsFieldAsInt(), ParseProcStats() and
-// ReadProcStats(). See GetProcStatsFieldAsInt() for details.
-int ReadProcStatsAndGetFieldAsInt(pid_t pid,
- ProcStatsFields field_num);
+// Convenience wrapper around GetProcStatsFieldAsInt64(), ParseProcStats() and
+// ReadProcStats(). See GetProcStatsFieldAsInt64() for details.
+int64 ReadProcStatsAndGetFieldAsInt64(pid_t pid, ProcStatsFields field_num);
-// Same as ReadProcStatsAndGetFieldAsInt() but for size_t values.
+// Same as ReadProcStatsAndGetFieldAsInt64() but for size_t values.
size_t ReadProcStatsAndGetFieldAsSizeT(pid_t pid,
ProcStatsFields field_num);
