This patch does the following.
- Uses "entries" consistently for the name of the value that is obtained from
MOZ_PROFILER_ENTRIES and is the first argument to profiler_start(). (I.e. not
"entry" or "entrySize".)
- Removes variables (e.g. PROFILER_HELP) holding env var names and uses the
names (e.g. "MOZ_PROFILER_HELP") directly. Some of the names are already used
directly and I think the slight repetition isn't harmful. It's unlikely that
we'd want to change these names the way we might need to change a numeric
value, and they're perfectly descriptive.
- Changes the "MOZ_PROFILING_FEATURES" string in the weird Android-only startup
code to be "MOZ_PROFILER_FEATURES", for consistency.
- Renames gUnwindInterval and gProfileEntries as gEnvVarInterval and
gEnvVarEntries to make it clearer that they come from environment variables,
but otherwise are parallel to gInterval and gEntries.
- Puts entries before intervals in most places, to match the profiler_start()
argument order.
- Changes profiler_usage() so that (a) it always prints, no matter the
verbosity, (b) it exits at its end, and (c) doesn't double-print "Profiler: "
at the start of each line.
When SPS profiler is disabled (breakpad is disabled etc), mozilla_sampler_stop() is undefined. We should use profiler_stop() instead. profiler_stop calls mozilla_sampler_stop() when SPS profiler is built.
MozReview-Commit-ID: LmuDJEQV7Pr
