#include "types.hh"
#include "util.hh"
#include "affinity.hh"

#if HAVE_SCHED_H
#include <sched.h>
#endif

namespace nix {


#if HAVE_SCHED_SETAFFINITY
static bool didSaveAffinity = false;
static cpu_set_t savedAffinity;
#endif


void setAffinityTo(int cpu)
{
#if HAVE_SCHED_SETAFFINITY
    if (sched_getaffinity(0, sizeof(cpu_set_t), &savedAffinity) == -1) return;
    didSaveAffinity = true;
    printMsg(lvlDebug, format("locking this thread to CPU %1%") % cpu);
    cpu_set_t newAffinity;
    CPU_ZERO(&newAffinity);
    CPU_SET(cpu, &newAffinity);
    if (sched_setaffinity(0, sizeof(cpu_set_t), &newAffinity) == -1)
        printMsg(lvlError, format("failed to lock thread to CPU %1%") % cpu);
#endif
}


int lockToCurrentCPU()
{
#if HAVE_SCHED_SETAFFINITY
    int cpu = sched_getcpu();
    if (cpu != -1) setAffinityTo(cpu);
    return cpu;
#else
    return -1;
#endif
}


void restoreAffinity()
{
#if HAVE_SCHED_SETAFFINITY
    if (!didSaveAffinity) return;
    if (sched_setaffinity(0, sizeof(cpu_set_t), &savedAffinity) == -1)
        printMsg(lvlError, "failed to restore affinity %1%");
#endif
}


}
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<div class='path'>path: <a href='/guix/log/?id=308877be17b2c2c92d972e105e8cc6a782ab4c82'>root</a>/<a href='/guix/log/gnu?id=308877be17b2c2c92d972e105e8cc6a782ab4c82'>gnu</a>/<a href='/guix/log/gnu/packages?id=308877be17b2c2c92d972e105e8cc6a782ab4c82'>packages</a>/<a href='/guix/log/gnu/packages/cryptsetup.scm?id=308877be17b2c2c92d972e105e8cc6a782ab4c82'>cryptsetup.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/cryptsetup.scm?id=308877be17b2c2c92d972e105e8cc6a782ab4c82&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-08-31 10:44:58 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=f48ecef7bda617e569e6cc8a98abccec2a9b5c3c'>gnu: cryptsetup: Only use ruby-asciidoctor on supported systems.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (cryptsetup)[native-inputs]: Only use
ruby-asciidoctor on supported systems.
[arguments]: When building without ruby-asciidoctor adjust the
configure-flags.

Change-Id: If4551833de3c5b5a28424c059644e9fa7fda5abd
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2024-08-31 10:44:54 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=e22853d5763ccda829412f6ddd1ff9cd1cfe5892'>gnu: cryptsetup: G-Expify static-library.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (static-library): G-Expify it.

Change-Id: I3123cab24b08acdb5a28e0052e9a9663d00fd564
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2024-08-31 10:44:51 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=40878bfc38a937ecb3fe58186152919bfd9be005'>gnu: cryptsetup-static: Fix static build.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (cryptsetup-static): Pass static variants of
dependencies.  Also work around wrong pkg-config paths of util-linux for the
static output.

Change-Id: I025f241b02ee0ea80227ef7d31789571e635ef2c
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2024-08-31 10:44:50 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=88874db03e6f138ff73df31222d51a6893c62c1f'>gnu: Add libcryptsetup-propagated-inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (libcryptsetup-propagated-inputs): Record needed
inputs for libcryptsetup.

Change-Id: Ia630f2d5f180536d997af93e57aa547379b2c010
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2024-08-31 10:44:50 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=2f59483df20582377e90b231af33f2f1e165fed7'>gnu: cryptsetup: Update to 2.6.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (cryptsetup): Update to 2.6.1.  Disable external
tokens for now.

Change-Id: I5610cabfbd46d010a8241430d8d90f5920847c04
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2023-12-23 10:47:13 +0100'>2023-12-23</span></td><td><a href='/guix/commit/gnu/packages/cryptsetup.scm?id=d211e54510d88b19a74383e780bdfe70b9686c8b'>gnu: cryptsetup: Fix cross-compilation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cryptsetup.scm (cryptsetup): Set explicit
`--with-libgcrypt-prefix' for cross-compilation.

Change-Id: I39b8d07926865dd168f9db8d3eb84fafbf3f3c56
Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Leo Nikkilä</td></tr>