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* vm.c (th_init): preallocate alternative stack.

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NoMemoryError is better than rb_bug, of course.
  Patch by Eric Wong. [ruby-core:38572][ruby-core:38594].

* signal.c (rb_register_sigaltstack): ditto.

* vm_core.h: moved ALT_STACK_SIZE definition from signal.c.
* vm.c (thread_free): use xfree() instead of free().



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32749 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
kosaki 2011-07-30 01:57:06 +00:00
parent 1054b79609
commit 18bc6c31a1
4 changed files with 25 additions and 12 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
Sat Jul 30 10:39:14 2011 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* vm.c (th_init): preallocate alternative stack.
NoMemoryError is better than rb_bug, of course.
Patch by Eric Wong. [ruby-core:38572][ruby-core:38594].
* signal.c (rb_register_sigaltstack): ditto.
* vm_core.h: moved ALT_STACK_SIZE definition from signal.c.
* vm.c (thread_free): use xfree() instead of free().
Sat Jul 30 07:20:49 2011 Tanaka Akira <akr@fsij.org> Sat Jul 30 07:20:49 2011 Tanaka Akira <akr@fsij.org>
* ext/socket/lib/socket.rb (udp_server_sockets): unused variable * ext/socket/lib/socket.rb (udp_server_sockets): unused variable

15
signal.c
View file

@ -423,29 +423,22 @@ typedef RETSIGTYPE ruby_sigaction_t(int);
#ifdef POSIX_SIGNAL #ifdef POSIX_SIGNAL
#ifdef USE_SIGALTSTACK #ifdef USE_SIGALTSTACK
#ifdef SIGSTKSZ
#define ALT_STACK_SIZE (SIGSTKSZ*2)
#else
#define ALT_STACK_SIZE (4*1024)
#endif
/* alternate stack for SIGSEGV */ /* alternate stack for SIGSEGV */
void void
rb_register_sigaltstack(rb_thread_t *th) rb_register_sigaltstack(rb_thread_t *th)
{ {
stack_t newSS, oldSS; stack_t newSS, oldSS;
if (th->altstack) return; if (!th->altstack)
rb_bug("rb_register_sigaltstack: th->altstack not initialized\n");
newSS.ss_sp = th->altstack = malloc(ALT_STACK_SIZE); newSS.ss_sp = th->altstack;
if (newSS.ss_sp == NULL)
/* should handle error */
rb_bug("rb_register_sigaltstack. malloc error\n");
newSS.ss_size = ALT_STACK_SIZE; newSS.ss_size = ALT_STACK_SIZE;
newSS.ss_flags = 0; newSS.ss_flags = 0;
sigaltstack(&newSS, &oldSS); /* ignore error. */ sigaltstack(&newSS, &oldSS); /* ignore error. */
} }
#endif #endif /* USE_SIGALTSTACK */
static sighandler_t static sighandler_t
ruby_signal(int signum, sighandler_t handler) ruby_signal(int signum, sighandler_t handler)

5
vm.c
View file

@ -1754,7 +1754,7 @@ thread_free(void *ptr)
else { else {
#ifdef USE_SIGALTSTACK #ifdef USE_SIGALTSTACK
if (th->altstack) { if (th->altstack) {
free(th->altstack); xfree(th->altstack);
} }
#endif #endif
ruby_xfree(ptr); ruby_xfree(ptr);
@ -1826,6 +1826,9 @@ th_init(rb_thread_t *th, VALUE self)
th->self = self; th->self = self;
/* allocate thread stack */ /* allocate thread stack */
#ifdef USE_SIGALTSTACK
th->altstack = xmalloc(ALT_STACK_SIZE);
#endif
th->stack_size = RUBY_VM_THREAD_STACK_SIZE; th->stack_size = RUBY_VM_THREAD_STACK_SIZE;
th->stack = thread_recycle_stack(th->stack_size); th->stack = thread_recycle_stack(th->stack_size);

6
vm_core.h
View file

@ -383,6 +383,12 @@ struct rb_unblock_callback {
struct rb_mutex_struct; struct rb_mutex_struct;
#ifdef SIGSTKSZ
#define ALT_STACK_SIZE (SIGSTKSZ*2)
#else
#define ALT_STACK_SIZE (4*1024)
#endif
typedef struct rb_thread_struct { typedef struct rb_thread_struct {
VALUE self; VALUE self;
rb_vm_t *vm; rb_vm_t *vm;