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26 lines
931 B
Bash
Executable File
26 lines
931 B
Bash
Executable File
#!/bin/bash
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get_glibc_version() {
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getconf GNU_LIBC_VERSION | cut -d ' ' -f 2
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}
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# Systems with glibc 2.34 or newer register custom rseq ABI
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# behavior that is incompatible with the new TCMalloc, and will cause
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# TCMalloc's rseq functionality to break and fall back to the per-thread
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# cache behavior. Systems with an older glibc version will successfully
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# use TCMalloc's per-CPU caches. We must ensure this environment variable is
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# set on problematic systems.
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configure_glibc_pthread_req() {
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if [[ "$OSTYPE" == "linux-gnu"* ]]; then
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local ver="$(get_glibc_version)"
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local major="$(echo $ver | cut -d '.' -f 1)"
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local minor="$(echo $ver | cut -d '.' -f 2)"
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if ((major > 2 || ((major == 2 && minor >= 34)))); then
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export GLIBC_TUNABLES="glibc.pthread.rseq=0"
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echo "glibc version >= 2.34 detected, setting env variable GLIBC_TUNABLES=glibc.pthread.rseq=0"
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fi
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fi
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}
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configure_glibc_pthread_req
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