Query Hardware information

Table of Contents

• Get number of CPU-Cores
• Get CPU architecture
• Get the CPU Name
• Query memory state
• Query CPU Capabilities

FPL provides a couple of functions for getting hardware functions, such as CPU & memory Infos, etc.

Get number of CPU-Cores

You can retrieve the number of processor cores by calling fplCPUGetCoreCount() .

size_t coreCount = fplCPUGetCoreCount();
// Do something with the core count

Note

Hyperthreads will be included as well, so on a typical 4-core HT CPU, this function will return eight cores.

Get CPU architecture

You can query the CPU architecture type by calling fplCPUGetArchitecture() . This will return a fplCPUArchType value, which you can use test for different architecture types.

Use fplCPUGetArchName() to convert a fplCPUArchType into a string.

fplCPUArchType cpuArch = fplCPUGetArchitecture();
if (cpuArch == fplCPUArchType_Arm64) {
    // Do something on a ARM-64 CPU
}
 
// or just print it out
const char *cpuArchString = fplCPUGetArchName(cpuArch);
fplConsoleFormatOut("CPU Architecture: %s\n", cpuArchString);

Get the CPU Name

You can query the CPU name by calling fplCPUGetName() .

// Print out the CPU-Name
char nameBuffer[1024];
fplCPUGetName(nameBuffer, fplArrayCount(nameBuffer));
fplConsoleFormatOut("CPU Name: %s\n", nameBuffer);

Query memory state

With fplMemoryGetInfos() you can query the current memory state.
This includes the size of the physical memory, the current memory usage, and more.
See fplMemoryInfos for more details.

fplMemoryInfos memInfos = fplZeroInit;
if (fplMemoryGetInfos(&memInfos)) {
    fplConsoleFormatOut("%llu of %llu physical memory is available.\n", memInfos.freePhysicalSize, memInfos.totalPhysicalSize);
}

Query CPU Capabilities

Use the fplCPUGetCapabilities() to retrieve a full set of available processor capabilities, like MMX/SSE/AVX support, etc.

fplCPUCapabilities caps = fplZeroInit;
if (fplCPUGetCapabilities(&caps)) {
    if (caps.x86.hasSSE2) {
        // Do something when the x86 CPU supports SSE2 - this should be true, on most modern x86 CPUs.
    }
}