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Make sure alloca fast path is used (inline assembler).

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This commit is contained in:
Samuel Williams 2019-06-06 11:04:24 +12:00
parent 7cc7269b3d
commit 561c9bcf3a
1 changed files with 6 additions and 2 deletions
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8
thread.c
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@ -77,6 +77,11 @@
#include "mjit.h" #include "mjit.h"
#include "hrtime.h" #include "hrtime.h"
#ifdef __linux__
// Normally, gcc(1) translates calls to alloca() with inlined code. This is not done when either the -ansi, -std=c89, -std=c99, or the -std=c11 option is given and the header <alloca.h> is not included.
#include <alloca.h>
#endif
#ifndef USE_NATIVE_THREAD_PRIORITY #ifndef USE_NATIVE_THREAD_PRIORITY
#define USE_NATIVE_THREAD_PRIORITY 0 #define USE_NATIVE_THREAD_PRIORITY 0
#define RUBY_THREAD_PRIORITY_MAX 3 #define RUBY_THREAD_PRIORITY_MAX 3
@ -714,8 +719,8 @@ thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_s
rb_thread_list_t *join_list; rb_thread_list_t *join_list;
rb_thread_t *main_th; rb_thread_t *main_th;
VALUE errinfo = Qnil; VALUE errinfo = Qnil;
VALUE * vm_stack = NULL;
size_t size = th->vm->default_params.thread_vm_stack_size / sizeof(VALUE); size_t size = th->vm->default_params.thread_vm_stack_size / sizeof(VALUE);
VALUE * vm_stack = NULL;
if (th == th->vm->main_thread) { if (th == th->vm->main_thread) {
rb_bug("thread_start_func_2 must not be used for main thread"); rb_bug("thread_start_func_2 must not be used for main thread");
@ -723,7 +728,6 @@ thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_s
vm_stack = alloca(size * sizeof(VALUE)); vm_stack = alloca(size * sizeof(VALUE));
rb_ec_set_vm_stack(th->ec, vm_stack, size); rb_ec_set_vm_stack(th->ec, vm_stack, size);
th->ec->cfp = (void *)(th->ec->vm_stack + th->ec->vm_stack_size); th->ec->cfp = (void *)(th->ec->vm_stack + th->ec->vm_stack_size);
rb_vm_push_frame(th->ec, rb_vm_push_frame(th->ec,