From cdc16d428f32294aa06b293fb81123f418e38b82 Mon Sep 17 00:00:00 2001 From: Vlad Vissoultchev Date: Sun, 17 Apr 2016 16:22:50 +0300 Subject: Reduce allocations overhead - uses new `TinyAlloc`-ators for small `TokenSym`, `CString` and `TokenString` instances - conditional `TAL_DEBUG` for mem leaks and double frees detection - on `TAL_DEBUG` collects allocation origin (file + line) - conditional `TAL_INFO` for allocators stats (in release mode too) - chain a new allocator twice current capacity on buffer exhaustion --- tcc.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'tcc.h') diff --git a/tcc.h b/tcc.h index 6fc3775..1698fb3 100644 --- a/tcc.h +++ b/tcc.h @@ -371,6 +371,12 @@ static inline void write64le(unsigned char *p, uint64_t x) #define TOK_HASH_SIZE 16384 /* must be a power of two */ #define TOK_ALLOC_INCR 512 /* must be a power of two */ #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */ +#define TOKSYM_TAL_SIZE (768 * 1024) /* allocator for tiny TokenSym in table_ident */ +#define TOKSTR_TAL_SIZE (768 * 1024) /* allocator for tiny TokenString instances */ +#define CSTR_TAL_SIZE (256 * 1024) /* allocator for tiny CString instances */ +#define TOKSYM_TAL_LIMIT 256 /* prefer unique limits to distinguish allocators debug msgs */ +#define TOKSTR_TAL_LIMIT 128 /* 32 * sizeof(int) */ +#define CSTR_TAL_LIMIT 1024 /* token symbol management */ typedef struct TokenSym { @@ -637,6 +643,42 @@ typedef struct ParseArgsState CString linker_arg; /* collect -Wl options for input such as "-Wl,-rpath -Wl," */ } ParseArgsState; +#if !defined(MEM_DEBUG) +#define tal_free(al, p) tal_free_impl(al, p) +#define tal_realloc(al, p, size) tal_realloc_impl(&al, p, size) +#define TAL_DEBUG_PARAMS +#else +#define TAL_DEBUG 1 +#define tal_free(al, p) tal_free_impl(al, p, __FILE__, __LINE__) +#define tal_realloc(al, p, size) tal_realloc_impl(&al, p, size, __FILE__, __LINE__) +#define TAL_DEBUG_PARAMS , const char *file, int line +#define TAL_DEBUG_FILE_LEN 15 +#endif +//#define TAL_INFO 1 /* collect and dump allocators stats */ + +typedef struct TinyAlloc { + size_t limit; + size_t size; + uint8_t *buffer; + uint8_t *p; + size_t nb_allocs; + struct TinyAlloc *next, *top; +#ifdef TAL_INFO + size_t nb_peak; + size_t nb_total; + size_t nb_missed; + uint8_t *peak_p; +#endif +} TinyAlloc; + +typedef struct tal_header_t { + size_t size; +#ifdef TAL_DEBUG + int line_num; /* negative line_num used for double free check */ + char file_name[TAL_DEBUG_FILE_LEN + 1]; +#endif +} tal_header_t; + struct TCCState { int verbose; /* if true, display some information during compilation */ -- cgit v1.3.1