#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
}


}
'/guix/'>summary</a><a href='/guix/refs/?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>refs</a><a class='active' href='/guix/log/tests/store-database.scm'>log</a><a href='/guix/tree/tests/store-database.scm?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>tree</a><a href='/guix/commit/tests/store-database.scm?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>commit</a><a href='/guix/diff/tests/store-database.scm?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/store-database.scm'>
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<div class='path'>path: <a href='/guix/log/?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>root</a>/<a href='/guix/log/tests?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>tests</a>/<a href='/guix/log/tests/store-database.scm?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d'>store-database.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/tests/store-database.scm?id=a7f63acfb7864aaa5dd0779d8296fb575875fb0d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-01-31 21:49:58 +0100'>2021-01-31</span></td><td><a href='/guix/commit/tests/store-database.scm?id=13a7d2a538b00aa0a8cf9b999f1a4ff3e5959af9'>database: Validate #:nar-size and #:time when registering store items.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/store/database.scm (assert-integer): New procedure.
(update-or-insert): Use it to validate NAR-SIZE and TIME.
* tests/store-database.scm ("sqlite-register with incorrect size"): New
test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-12-15 17:32:11 +0100'>2020-12-15</span></td><td><a href='/guix/commit/tests/store-database.scm?id=3169c93903c20cea000335d59560eac7f28e8f92'>database: Remove 'register-path'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/store/database.scm (register-path): Remove.
* tests/store-database.scm ("register-path"): Rename to...
("register-items"): ... this, and use 'register-items' instead of
'register-path'.
("register-path, directory"): Rename to...
("register-items, directory"): ... this, and use 'register-items'
instead of 'register-path'.
("register-path with unregistered references"): Rename to...
("sqlite-register with unregistered references"): ... this.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-12-15 17:32:11 +0100'>2020-12-15</span></td><td><a href='/guix/commit/tests/store-database.scm?id=0682cc593688e7d9a435ca69f05320aa87df06d0'>database: Remove #:deduplicate? and #:reset-timestamps? from 'register-path'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/store/database.scm (register-path): Remove #:deduplicate?
and #:reset-timestamps?.
* guix/scripts/system.scm (copy-item): Adjust accordingly.
* tests/store-database.scm ("register-path")
("register-path, directory"): Call 'reset-timestamps'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-21 12:39:14 +0100'>2020-11-21</span></td><td><a href='/guix/commit/tests/store-database.scm?id=ac435c14a627f620bf6719efbdd214a12b33716e'>store-database: Add test checking the directory mtime after 'register-path'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/store-database.scm ("register-path, directory"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>