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Improve stack rlimit code in smtio.py

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-11-06 10:05:23 +01:00
parent 719e29404a
commit 79075d123f
1 changed files with 8 additions and 8 deletions
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16
backends/smt2/smtio.py
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@ -31,16 +31,16 @@ from threading import Thread
# does not run out of stack frames when parsing large expressions
if os.name == "posix":
smtio_reclimit = 64 * 1024
smtio_stacksize = 128 * 1024 * 1024
smtio_stacklimit = resource.RLIM_INFINITY
if os.uname().sysname == "Darwin":
# MacOS has rather conservative stack limits
smtio_stacksize = 16 * 1024 * 1024
smtio_stacklimit = resource.getrlimit(resource.RLIMIT_STACK)[1]
if sys.getrecursionlimit() < smtio_reclimit:
sys.setrecursionlimit(smtio_reclimit)
if resource.getrlimit(resource.RLIMIT_STACK)[0] < smtio_stacksize:
resource.setrlimit(resource.RLIMIT_STACK, (smtio_stacksize, smtio_stacklimit))
smtio_stacksize = 128 * 1024 * 1024
current_rlimit_stack = resource.getrlimit(resource.RLIMIT_STACK)
if current_rlimit_stack[0] != resource.RLIM_INFINITY:
if current_rlimit_stack[1] != resource.RLIM_INFINITY:
smtio_stacksize = min(smtio_stacksize, smtio_stacklimit)
if current_rlimit_stack[0] < smtio_stacksize:
resource.setrlimit(resource.RLIMIT_STACK, (smtio_stacksize, current_rlimit_stack[1]))
# currently running solvers (so we can kill them)