mirror of
https://github.com/golang/go
synced 2024-10-05 00:21:21 -06:00
aabbcda816
R=golang-dev CC=golang-dev https://golang.org/cl/5756044
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin freebsd linux openbsd netbsd
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#include "runtime.h"
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#include "defs_GOOS_GOARCH.h"
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#include "os_GOOS.h"
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extern SigTab runtime·sigtab[];
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void
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runtime·initsig(void)
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{
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int32 i;
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SigTab *t;
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// First call: basic setup.
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for(i = 0; i<NSIG; i++) {
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t = &runtime·sigtab[i];
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if((t->flags == 0) || (t->flags & SigDefault))
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continue;
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runtime·setsig(i, runtime·sighandler, true);
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}
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}
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void
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runtime·sigenable(uint32 sig)
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{
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int32 i;
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SigTab *t;
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for(i = 0; i<NSIG; i++) {
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// ~0 means all signals.
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if(~sig == 0 || i == sig) {
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t = &runtime·sigtab[i];
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if(t->flags & SigDefault) {
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runtime·setsig(i, runtime·sighandler, true);
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t->flags &= ~SigDefault; // make this idempotent
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}
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}
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}
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}
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void
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runtime·resetcpuprofiler(int32 hz)
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{
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Itimerval it;
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runtime·memclr((byte*)&it, sizeof it);
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if(hz == 0) {
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runtime·setitimer(ITIMER_PROF, &it, nil);
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runtime·setprof(false);
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} else {
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it.it_interval.tv_sec = 0;
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it.it_interval.tv_usec = 1000000 / hz;
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it.it_value = it.it_interval;
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runtime·setitimer(ITIMER_PROF, &it, nil);
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runtime·setprof(true);
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}
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m->profilehz = hz;
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}
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void
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os·sigpipe(void)
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{
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runtime·setsig(SIGPIPE, SIG_DFL, false);
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runtime·raisesigpipe();
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}
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