AuroraSupport/AuroraRuntime
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[+] Unix AuProcesses: missing optAffinity support

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This commit is contained in:
Reece Wilson 2023-09-16 21:49:30 +01:00
parent 841fa39321
commit 644c294c36
1 changed files with 70 additions and 0 deletions
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70
Source/Processes/AuProcess.Unix.cpp
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@ -34,6 +34,20 @@
#endif
#endif
#if defined(AURORA_PLATFORM_BSD)
#if defined(__FreeBSD__)
#include <sys/param.h>
#endif
#include <sys/cpuset.h>
#endif
#if defined(AURORA_IS_LINUX_DERIVED)
#include <sched.h>
#endif
namespace Aurora::Processes
{
static AuThreadPrimitives::RWLockUnique_t gRWLock;
@ -522,6 +536,62 @@ namespace Aurora::Processes
}
#endif
if (this->startup_.optAffinity)
{
auto affinity = this->startup_.optAffinity.Value();
#if defined(__FreeBSD__)
cpuset_setid(CPU_WHICH_PID, -1, (cpusetid_t *)&affinity.lower); // I guess?
#elif defined(AURORA_IS_LINUX_DERIVED) || (defined(AURORA_IS_POSIX_DERIVED) && defined(_GNU_SOURCE))
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
AuUInt8 index {};
while (affinity.CpuBitScanForward(index, index))
{
CPU_SET(index, &cpuset);
index++;
}
if (!CPU_COUNT(&cpuset))
{
return;
}
#if defined(AURORA_IS_LINUX_DERIVED)
sched_setaffinity(0, sizeof(cpu_set_t), &cpuset);
#else
pthread_setaffinity_np(pthread_self(), cpuset_size(cpuSet), &cpuset);
#endif
#elif defined(AURORA_IS_POSIX_DERIVED)
if (auto cpuSet = cpuset_alloc())
{
cpuset_init(cpuSet);
AuUInt8 index {};
while (affinity.CpuBitScanForward(index, index))
{
cpuset_set_cpu(cpuSet, index, 1);
index++;
}
pthread_setaffinity_np(pthread_self(), cpuset_size(cpuSet), cpuSet);
cpuset_free(cpuSet);
}
#else
// Who else?
#endif
}
::execv(this->startup_.process.c_str(), (char * const *)this->cargs_.data()); // https://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html
SysPushErrorGen("execv didn't overwrite the process map. Launch: {} ({})", this->startup_.process, this->debug_);