Mercurial > cpython-lru_cache-weakref
diff Objects/floatobject.c @ 45143:8fdd6d62ea55 legacy-trunk
Patch #1953
I implemented the function sys._compact_freelists() and C API functions PyInt_/PyFloat_CompactFreeList() to compact the pre-allocated blocks of ints and floats. They allow the user to reduce the memory usage of a Python process that deals with lots of numbers.
The patch also renames sys._cleartypecache to sys._clear_type_cache
| author | Christian Heimes <christian@cheimes.de> |
|---|---|
| date | Mon, 04 Feb 2008 18:00:12 +0000 |
| parents | f5e18c9bde70 |
| children | b7231bf6bfb7 |
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--- a/Objects/floatobject.c Mon Feb 04 01:04:35 2008 +0000 +++ b/Objects/floatobject.c Mon Feb 04 18:00:12 2008 +0000 @@ -1609,17 +1609,15 @@ } void -PyFloat_Fini(void) +PyFloat_CompactFreeList(size_t *pbc, size_t *pbf, size_t *bsum) { PyFloatObject *p; PyFloatBlock *list, *next; unsigned i; - int bc, bf; /* block count, number of freed blocks */ - int frem, fsum; /* remaining unfreed floats per block, total */ + size_t bc = 0, bf = 0; /* block count, number of freed blocks */ + size_t fsum = 0; /* total unfreed ints */ + int frem; /* remaining unfreed ints per block */ - bc = 0; - bf = 0; - fsum = 0; list = block_list; block_list = NULL; free_list = NULL; @@ -1654,6 +1652,22 @@ fsum += frem; list = next; } + *pbc = bc; + *pbf = bf; + *bsum = fsum; +} + +void +PyFloat_Fini(void) +{ + PyFloatObject *p; + PyFloatBlock *list; + unsigned i; + size_t bc, bf; /* block count, number of freed blocks */ + size_t fsum; /* total unfreed floats per block */ + + PyFloat_CompactFreeList(&bc, &bf, &fsum); + if (!Py_VerboseFlag) return; fprintf(stderr, "# cleanup floats"); @@ -1662,7 +1676,9 @@ } else { fprintf(stderr, - ": %d unfreed float%s in %d out of %d block%s\n", + ": %" PY_FORMAT_SIZE_T "d unfreed floats%s in %" + PY_FORMAT_SIZE_T "d out of %" + PY_FORMAT_SIZE_T "d block%s\n", fsum, fsum == 1 ? "" : "s", bc - bf, bc, bc == 1 ? "" : "s"); }