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Bug 666707 - Add a telemetry probe to record whether we started following a successful shutdown r=zpao

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This commit is contained in:
Taras Glek 2011-06-28 16:54:36 -07:00
parent ca7e11eb83
commit 6c90dd6553
2 changed files with 7 additions and 0 deletions
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6
browser/components/sessionstore/src/nsSessionStartup.js
View File

@ -147,6 +147,12 @@ SessionStartup.prototype = {
initialState && initialState.session && initialState.session.state &&
initialState.session.state == STATE_RUNNING_STR;
// Report shutdown success via telemetry. Shortcoming here are
// being-killed-by-OS-shutdown-logic, shutdown freezing after
// session restore was written, etc.
let Telemetry = Cc["@mozilla.org/base/telemetry;1"].getService(Ci.nsITelemetry);
Telemetry.getHistogramById("SHUTDOWN_OK").add(!lastSessionCrashed);
// set the startup type
if (lastSessionCrashed && resumeFromCrash)
this._sessionType = Ci.nsISessionStartup.RECOVER_SESSION;

1
toolkit/components/telemetry/TelemetryHistograms.h
View File

@ -61,3 +61,4 @@ HISTOGRAM(GLUESTARTUP_HARD_FAULTS, 1, 500, 12, EXPONENTIAL, "Hard faults count a
HISTOGRAM(HARD_PAGE_FAULTS, 8, 64 * 1024, 13, EXPONENTIAL, "Hard page faults (since last telemetry ping)")
#endif
HISTOGRAM(ZIPARCHIVE_CRC, 0, 1, 2, BOOLEAN, "Zip item CRC check pass")
HISTOGRAM(SHUTDOWN_OK, 0, 1, 2, BOOLEAN, "Did the browser start after a successful shutdown")