diff options
| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-01-26 23:32:22 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-01-26 23:32:22 +0000 |
| commit | 8489ac41cadc1ef80ea57799bc833a831d1afdc6 (patch) | |
| tree | e3bb5aec91fb867e78c7d15fbd4ad85484dfc2f4 /include | |
| parent | d6eb807878922b2976831236c3f6235ccfb6edb4 (diff) | |
* include/ruby/ruby.h (ALLOCV): new API for exception-safe
temporary buffer. [ruby-core:34844]
* string.c (rb_alloc_tmp_buffer, rb_free_tmp_buffer):
implementation of the API.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30661 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include')
| -rw-r--r-- | include/ruby/ruby.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h index 4e15517377..aca517ca61 100644 --- a/include/ruby/ruby.h +++ b/include/ruby/ruby.h @@ -1028,6 +1028,18 @@ NUM2CHR(VALUE x) #define ALLOCA_N(type,n) (type*)alloca(sizeof(type)*(n)) +void *rb_alloc_tmp_buffer(volatile VALUE *store, long len); +void rb_free_tmp_buffer(volatile VALUE *store); +/* allocates _n_ bytes temporary buffer and stores VALUE including it + * in _v_. _n_ may be evaluated twice. */ +#ifdef C_ALLOCA +# define ALLOCV(v, n) rb_alloc_tmp_buffer(&(v), (n)) +#else +# define ALLOCV(v, n) ((n) < 1024 ? (RB_GC_GUARD(v) = 0, alloca(n)) : rb_alloc_tmp_buffer(&(v), (n))) +#endif +#define ALLOCV_N(type, v, n) (type*)ALLOCV((v), sizeof(type)*(n)) +#define ALLOCV_END(v) rb_free_tmp_buffer(&(v)) + #define MEMZERO(p,type,n) memset((p), 0, sizeof(type)*(n)) #define MEMCPY(p1,p2,type,n) memcpy((p1), (p2), sizeof(type)*(n)) #define MEMMOVE(p1,p2,type,n) memmove((p1), (p2), sizeof(type)*(n)) |