#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
}


}
ummary</a><a href='/guix/refs/?id=9829f53a3f88884e245e962073528be46918ad2e'>refs</a><a class='active' href='/guix/log/gnu/packages/mc.scm'>log</a><a href='/guix/tree/gnu/packages/mc.scm?id=9829f53a3f88884e245e962073528be46918ad2e'>tree</a><a href='/guix/commit/gnu/packages/mc.scm?id=9829f53a3f88884e245e962073528be46918ad2e'>commit</a><a href='/guix/diff/gnu/packages/mc.scm?id=9829f53a3f88884e245e962073528be46918ad2e'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/mc.scm'>
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<div class='path'>path: <a href='/guix/log/?id=9829f53a3f88884e245e962073528be46918ad2e'>root</a>/<a href='/guix/log/gnu?id=9829f53a3f88884e245e962073528be46918ad2e'>gnu</a>/<a href='/guix/log/gnu/packages?id=9829f53a3f88884e245e962073528be46918ad2e'>packages</a>/<a href='/guix/log/gnu/packages/mc.scm?id=9829f53a3f88884e245e962073528be46918ad2e'>mc.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/mc.scm?id=9829f53a3f88884e245e962073528be46918ad2e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-08-26 21:18:38 +0200'>2021-08-26</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=d1d9206180763f8291c82b1a6240b3640bd4f238'>gnu: mc: Update to 4.8.27.</a><span class='msg-avail'>...<span class='msg-tooltip'>Switched to direct mirror URI to match SSL certificate issuer
(home page does not provide a download link over secure protocols).

While at it added 'release-monitoing-url property to allow
'generic-html updater to fetch latest version from correct location.
Otherwise the only available updater is 'gnu-ftp (which forces downgrade
to ancient 4.6.1 release).

* gnu/packages/mc.scm (mc): Update to 4.8.27. Explicitly set
release-monitoing-url to up to date location.
</span></span></td><td>Sergei Trofimovich</td></tr>