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pseudo-stack no longer checks on every function entry whether it has been

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allocated
This commit is contained in:
Jean-Marc Valin 2008-04-18 17:29:56 +10:00
parent ba8295241c
commit f7cec83c59
5 changed files with 14 additions and 5 deletions
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8
libcelt/stack_alloc.h
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@ -91,6 +91,7 @@
#define ALLOC(var, size, type) type var[size]
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
#elif defined(USE_ALLOCA)
@ -98,6 +99,7 @@
#define ALLOC(var, size, type) var = ((type*)alloca(sizeof(type)*(size)))
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
#else
@ -105,7 +107,6 @@
#include <valgrind/memcheck.h>
#define ALLOC_STACK(stack) (stack = (stack==0) ? celt_alloc_scratch(25000) : stack, VALGRIND_MAKE_NOACCESS(stack, 1000))
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (VALGRIND_MAKE_NOACCESS(stack, 1000),ALIGN((stack),sizeof(type)/sizeof(char)),VALGRIND_MAKE_WRITABLE(stack, ((size)*sizeof(type)/sizeof(char))),(stack)+=((size)*sizeof(type)/sizeof(char)),(type*)((stack)-((size)*sizeof(type)/sizeof(char))))
@ -113,7 +114,6 @@
#else
#define ALLOC_STACK(stack) (stack = (stack==0) ? celt_alloc_scratch(25000) : stack)
/* FIXME: Only align up to a certain size (not for structs) */
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)/sizeof(char)),(stack)+=((size)*sizeof(type)/sizeof(char)),(type*)((stack)-((size)*sizeof(type)/sizeof(char))))
@ -130,7 +130,9 @@ extern char *global_stack;
#include "os_support.h"
#define VARDECL(type, var) type *var
#define ALLOC(var, size, type) var = PUSH(global_stack, size, type)
#define SAVE_STACK char *_saved_stack; ALLOC_STACK(global_stack);_saved_stack = global_stack;
#define SAVE_STACK char *_saved_stack = global_stack;
#define ALLOC_STACK (global_stack = (global_stack==0) ? celt_alloc_scratch(25000) : global_stack)
#endif