Siarhei Siniak
1530fcf108
1. 7f51a0332edd0c675c2d314ca3e62df7ef041281 deps/ipython (8.4.0-33-g7f51a0332)
73 lines
1.6 KiB
Plaintext
73 lines
1.6 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Holding the GIL for too long could disrupt the heartbeat due to non-copying sends.\n",
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"\n",
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"The following cell repeatedly calls a function that holds the GIL for five seconds.\n",
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"\n",
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"The heartbeat will fail after a few iterations prior to fixing Issue [#1260](https://github.com/ipython/ipython/issues/1260)."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"import sys\n",
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"import time\n",
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"\n",
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"from cython import inline\n",
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"\n",
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"def gilsleep(t):\n",
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" \"\"\"gil-holding sleep with cython.inline\"\"\"\n",
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" code = '\\n'.join([\n",
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" 'from posix cimport unistd',\n",
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" 'unistd.sleep(t)',\n",
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" ])\n",
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" while True:\n",
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" inline(code, quiet=True, t=t)\n",
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" print time.time()\n",
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" sys.stdout.flush() # this is important\n",
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"\n",
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"gilsleep(5)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true
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},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.4.2"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 0
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}
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