diff options
Diffstat (limited to 'Modules/bz2module.c')
| -rw-r--r-- | Modules/bz2module.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/Modules/bz2module.c b/Modules/bz2module.c index 3e55202..a671e8d 100644 --- a/Modules/bz2module.c +++ b/Modules/bz2module.c @@ -218,25 +218,14 @@ Util_CatchBZ2Error(int bzerror) #define SMALLCHUNK BUFSIZ #endif -#if SIZEOF_INT < 4 -#define BIGCHUNK (512 * 32) -#else -#define BIGCHUNK (512 * 1024) -#endif - /* This is a hacked version of Python's fileobject.c:new_buffersize(). */ static size_t Util_NewBufferSize(size_t currentsize) { - if (currentsize > SMALLCHUNK) { - /* Keep doubling until we reach BIGCHUNK; - then keep adding BIGCHUNK. */ - if (currentsize <= BIGCHUNK) - return currentsize + currentsize; - else - return currentsize + BIGCHUNK; - } - return currentsize + SMALLCHUNK; + /* Expand the buffer by an amount proportional to the current size, + giving us amortized linear-time behavior. Use a less-than-double + growth factor to avoid excessive allocation. */ + return currentsize + (currentsize >> 3) + 6; } /* This is a hacked version of Python's fileobject.c:get_line(). */ |