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runtime: remove hardcoded runtime consts from gdb script

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Instead evaluate and read the runtime internal constants
defined in runtime2.go

R=go1.11

Change-Id: If2f4b87e5b3f62f0c0ff1e86a90db8e37a78abb6
Reviewed-on: https://go-review.googlesource.com/87877
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Hana Kim 2018-01-16 15:21:34 -05:00 committed by Hyang-Ah Hana Kim
parent d691a31ec1
commit ef175731ff
1 changed files with 47 additions and 6 deletions
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53
src/runtime/runtime-gdb.py
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@ -27,6 +27,48 @@ if sys.version > '3':
goobjfile = gdb.current_objfile() or gdb.objfiles()[0]
goobjfile.pretty_printers = []
# G state (runtime2.go)
def read_runtime_const(varname, default):
try:
return int(gdb.parse_and_eval(varname))
except Exception:
return int(default)
G_IDLE = read_runtime_const("'runtime._Gidle'", 0)
G_RUNNABLE = read_runtime_const("'runtime._Grunnable'", 1)
G_RUNNING = read_runtime_const("'runtime._Grunning'", 2)
G_SYSCALL = read_runtime_const("'runtime._Gsyscall'", 3)
G_WAITING = read_runtime_const("'runtime._Gwaiting'", 4)
G_MORIBUND_UNUSED = read_runtime_const("'runtime._Gmoribund_unused'", 5)
G_DEAD = read_runtime_const("'runtime._Gdead'", 6)
G_ENQUEUE_UNUSED = read_runtime_const("'runtime._Genqueue_unused'", 7)
G_COPYSTACK = read_runtime_const("'runtime._Gcopystack'", 8)
G_SCAN = read_runtime_const("'runtime._Gscan'", 0x1000)
G_SCANRUNNABLE = G_SCAN+G_RUNNABLE
G_SCANRUNNING = G_SCAN+G_RUNNING
G_SCANSYSCALL = G_SCAN+G_SYSCALL
G_SCANWAITING = G_SCAN+G_WAITING
sts = {
G_IDLE: 'idle',
G_RUNNABLE: 'runnable',
G_RUNNING: 'running',
G_SYSCALL: 'syscall',
G_WAITING: 'waiting',
G_MORIBUND_UNUSED: 'moribund',
G_DEAD: 'dead',
G_ENQUEUE_UNUSED: 'enqueue',
G_COPYSTACK: 'copystack',
G_SCAN: 'scan',
G_SCANRUNNABLE: 'runnable+s',
G_SCANRUNNING: 'running+s',
G_SCANSYSCALL: 'syscall+s',
G_SCANWAITING: 'waiting+s',
}
#
# Value wrappers
#
@ -360,9 +402,6 @@ class DTypeFunc(gdb.Function):
# Commands
#
sts = ('idle', 'runnable', 'running', 'syscall', 'waiting', 'moribund', 'dead', 'recovery')
def linked_list(ptr, linkfield):
while ptr:
yield ptr
@ -379,7 +418,7 @@ class GoroutinesCmd(gdb.Command):
# args = gdb.string_to_argv(arg)
vp = gdb.lookup_type('void').pointer()
for ptr in SliceValue(gdb.parse_and_eval("'runtime.allgs'")):
if ptr['atomicstatus'] == 6: # 'gdead'
if ptr['atomicstatus'] == G_DEAD:
continue
s = ' '
if ptr['m']:
@ -398,7 +437,9 @@ class GoroutinesCmd(gdb.Command):
# chop at first space.
pc = int(str(pc).split(None, 1)[0], 16)
blk = gdb.block_for_pc(pc)
print(s, ptr['goid'], "{0:8s}".format(sts[int(ptr['atomicstatus'])]), blk.function)
status = int(ptr['atomicstatus'])
st = sts.get(status, "unknown(%d)" % status)
print(s, ptr['goid'], "{0:8s}".format(st), blk.function)
def find_goroutine(goid):
@ -413,7 +454,7 @@ def find_goroutine(goid):
"""
vp = gdb.lookup_type('void').pointer()
for ptr in SliceValue(gdb.parse_and_eval("'runtime.allgs'")):
if ptr['atomicstatus'] == 6: # 'gdead'
if ptr['atomicstatus'] == G_DEAD:
continue
if ptr['goid'] == goid:
break