Issue #9089: Remove references to intobject.c and intobject.h from comments.

This commit is contained in:
Mark Dickinson 2010-06-27 18:19:09 +00:00
parent 7ab54e4252
commit d19052c161
4 changed files with 19 additions and 4 deletions

View file

@ -21,7 +21,22 @@
extern int finite(double);
#endif
/* Special free list -- see comments for same code in intobject.c. */
/* Special free list
Since some Python programs can spend much of their time allocating
and deallocating floats, these operations should be very fast.
Therefore we use a dedicated allocation scheme with a much lower
overhead (in space and time) than straight malloc(): a simple
dedicated free list, filled when necessary with memory from malloc().
block_list is a singly-linked list of all PyFloatBlocks ever allocated,
linked via their next members. PyFloatBlocks are never returned to the
system before shutdown (PyFloat_Fini).
free_list is a singly-linked list of available PyFloatObjects, linked
via abuse of their ob_type members.
*/
#define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */
#define BHEAD_SIZE 8 /* Enough for a 64-bit pointer */
#define N_FLOATOBJECTS ((BLOCK_SIZE - BHEAD_SIZE) / sizeof(PyFloatObject))