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