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packer: add buf_size option #604

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Merged
methane merged 5 commits into from
May 5, 2024
+15 −27
Merged

packer: add buf_size option #604

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edb61db
Allow users to specify Packer internal buf_size
rtobar Jul 18, 2023
db39717
Merge branch 'main' into bufsize-argument
methane May 5, 2024
fdf5c1c
change default buffer size to 256KiB
methane May 5, 2024
fe30d22
Merge branch 'main' into bufsize-argument
methane May 5, 2024
09825cb
update fallback
methane May 5, 2024
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change default buffer size to 256KiB
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@methane
methane committed May 5, 2024
commit fdf5c1c5176c3d341450dbd052ad667436876db6
7 changes: 4 additions & 3 deletions msgpack/_packer.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@ cdef class Packer(object):
DO NOT USE THIS!! This option is kept for very specific usage.

:param int buf_size:
The size of the internal buffer. (default: 1024 * 1024)
The size of the internal buffer. (default: 256*1024)
Useful if serialisation size can be correctly estimated,
avoid unnecessary reallocations.
"""
Expand All @@ -118,7 +118,7 @@ cdef class Packer(object):
cdef bint autoreset
cdef bint datetime

def __cinit__(self, buf_size=1024*1024, **_kwargs):
def __cinit__(self, buf_size=256*1024, **_kwargs):
self.pk.buf = <char*> PyMem_Malloc(buf_size)
if self.pk.buf == NULL:
raise MemoryError("Unable to allocate internal buffer.")
Expand All @@ -127,7 +127,8 @@ cdef class Packer(object):

def __init__(self, *, default=None,
bint use_single_float=False, bint autoreset=True, bint use_bin_type=True,
bint strict_types=False, bint datetime=False, unicode_errors=None, buf_size=1024*1024):
bint strict_types=False, bint datetime=False, unicode_errors=None,
buf_size=256*1024):
self.use_float = use_single_float
self.strict_types = strict_types
self.autoreset = autoreset
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