From c0f0119244f33d11ad8caf6a028a67bbb2878f9e Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Wed, 24 Jul 2013 13:18:45 +0000 Subject: runtime: Move new 1.1.1 functions from thread-linux.c to runtime.c. This way they are compiled on non-GNU/Linux systems. From-SVN: r201209 --- libgo/runtime/runtime.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) (limited to 'libgo/runtime/runtime.c') diff --git a/libgo/runtime/runtime.c b/libgo/runtime/runtime.c index 138e5af..1ff6d00 100644 --- a/libgo/runtime/runtime.c +++ b/libgo/runtime/runtime.c @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +#include #include #include "config.h" @@ -232,3 +233,49 @@ runtime_pprof_runtime_cyclesPerSecond(void) { return runtime_tickspersecond(); } + +// Called to initialize a new m (including the bootstrap m). +// Called on the parent thread (main thread in case of bootstrap), can allocate memory. +void +runtime_mpreinit(M *mp) +{ + mp->gsignal = runtime_malg(32*1024, &mp->gsignalstack, &mp->gsignalstacksize); // OS X wants >=8K, Linux >=2K +} + +// Called to initialize a new m (including the bootstrap m). +// Called on the new thread, can not allocate memory. +void +runtime_minit(void) +{ + M* m; + sigset_t sigs; + + // Initialize signal handling. + m = runtime_m(); + runtime_signalstack(m->gsignalstack, m->gsignalstacksize); + if (sigemptyset(&sigs) != 0) + runtime_throw("sigemptyset"); + sigprocmask(SIG_SETMASK, &sigs, nil); +} + +// Called from dropm to undo the effect of an minit. +void +runtime_unminit(void) +{ + runtime_signalstack(nil, 0); +} + + +void +runtime_signalstack(byte *p, int32 n) +{ + stack_t st; + + st.ss_sp = p; + st.ss_size = n; + st.ss_flags = 0; + if(p == nil) + st.ss_flags = SS_DISABLE; + if(sigaltstack(&st, nil) < 0) + *(int *)0xf1 = 0xf1; +} -- cgit v1.1