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Bug 933807 - Allow easily disabling TriggerOperationCallbackFor(Ion|AsmJS)Code. Set the environment variable by default in "mach debug", allow disabling. r=gps

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This commit is contained in:
Andrew Sutherland 2013-11-20 20:07:42 -05:00
parent 113a29fdda
commit 479e89b1e2
1 changed files with 13 additions and 3 deletions
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16
python/mozbuild/mozbuild/mach_commands.py
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@ -760,7 +760,14 @@ class DebugProgram(MachCommandBase):
help='Do not pass the -foreground argument by default on Mac') help='Do not pass the -foreground argument by default on Mac')
@CommandArgument('+gdbparams', default=None, metavar='params', type=str, @CommandArgument('+gdbparams', default=None, metavar='params', type=str,
help='Command-line arguments to pass to GDB itself; split as the Bourne shell would.') help='Command-line arguments to pass to GDB itself; split as the Bourne shell would.')
def debug(self, params, remote, background, gdbparams): # Bug 933807 introduced JS_DISABLE_SLOW_SCRIPT_SIGNALS to avoid clever
# segfaults induced by the slow-script-detecting logic for Ion/Odin JITted
# code. If we don't pass this, the user will need to periodically type
# "continue" to (safely) resume execution. There are ways to implement
# automatic resuming; see the bug.
@CommandArgument('+slowscript', action='store_true',
help='Do not set the JS_DISABLE_SLOW_SCRIPT_SIGNALS env variable; when not set, recoverable but misleading SIGSEGV instances may occur in Ion/Odin JIT code')
def debug(self, params, remote, background, gdbparams, slowscript):
import which import which
try: try:
debugger = which.which('gdb') debugger = which.which('gdb')
@ -769,6 +776,7 @@ class DebugProgram(MachCommandBase):
print(e) print(e)
return 1 return 1
args = [debugger] args = [debugger]
extra_env = {}
if gdbparams: if gdbparams:
import pymake.process import pymake.process
(argv, badchar) = pymake.process.clinetoargv(gdbparams, os.getcwd()) (argv, badchar) = pymake.process.clinetoargv(gdbparams, os.getcwd())
@ -790,8 +798,10 @@ class DebugProgram(MachCommandBase):
args.append('-foreground') args.append('-foreground')
if params: if params:
args.extend(params) args.extend(params)
return self.run_process(args=args, ensure_exit_code=False, if not slowscript:
pass_thru=True) extra_env['JS_DISABLE_SLOW_SCRIPT_SIGNALS'] = '1'
return self.run_process(args=args, append_env=extra_env,
ensure_exit_code=False, pass_thru=True)
@CommandProvider @CommandProvider
class Buildsymbols(MachCommandBase): class Buildsymbols(MachCommandBase):