switch_libnx_memamounttest.c

#include <string.h>
#include <stdio.h>

#include <switch.h>
#include <malloc.h>

int main(int argc, char **argv)
{
    consoleInit(NULL);

    size_t mem_available;
    size_t mem_used;
    struct mallinfo mi = mallinfo();
    svcGetInfo(&mem_available, InfoType_TotalMemorySize, CUR_PROCESS_HANDLE, 0);
    svcGetInfo(&mem_used, InfoType_UsedMemorySize, CUR_PROCESS_HANDLE, 0);
    size_t heap_available = mi.uordblks;
    size_t heap_used = mi.fordblks;
    bool has_heap_override = envHasHeapOverride();

    printf("Memory available: 0x%lx\n", mem_available);
    printf("Memory used: 0x%lx\n", mem_used);
    printf("Heap available: 0x%lx\n", heap_available);
    printf("Heap free: 0x%lx\n", heap_used);
    printf("Has heap override: 0x%x\n", has_heap_override);

    while (appletMainLoop())
    {
        hidScanInput();

        u64 kDown = hidKeysDown(CONTROLLER_P1_AUTO);

        if (kDown & KEY_PLUS)
        {
            break;
        }

        consoleUpdate(NULL);
    }

    consoleExit(NULL);
    return 0;
}

/*
For each run, be sure you exit to qlaunch.
If you exit the testing program to hbmenu and open it right back up, you will get the same results.

Test results:
as app override:
Memory available: 0xc7500000
Memory used: 0xc7140000
Heap available: 0x190134f0
Heap free: 0x19010188
Has heap override: 0x1
as app override (2):
Memory available: 0xc7500000
Memory used: 0xc7140000
Heap available: 0x50e134f0
Heap free: 0x50e10188
Has heap override: 0x1
as app override (3):
Memory available: 0xc7500000
Memory used: 0xc7140000
Heap available: 0x2d6134f0
Heap free: 0x2d610188
Has heap override: 0x1

as applet override:
Memory available: 0x181dd000
Memory used: 0xf940000
Heap available: 0x2f4134f0
Heap free: 0x2f410188
Has heap override: 0x1
as applet override (2):
Memory available: 0x181dd000
Memory used: 0xf940000
Heap available: 0x64c134f0
Heap free: 0x64c10188
Has heap override: 0x1
as applet override (3):
Memory available: 0x181dd000
Memory used: 0xf940000
Heap available: 0x484134f0
Heap free: 0x48410188
Has heap override: 0x1

as hbmenu.nsp forwarder:
Memory available: 0xc7500000
Memory used: 0xc7163000
Heap available: 0x2a215f00
Heap free: 0x2a212208
Has heap override: 0x1
as hbmenu.nsp forwarder (2):
Memory available: 0xc7500000
Memory used: 0xc7163000
Heap available: 0x61e15f00
Heap free: 0x61e12208
Has heap override: 0x1
as hbmenu.nsp forwarder (3):
Memory available: 0xc7500000
Memory used: 0xc7163000
Heap available: 0x4f815f00
Heap free: 0x4f812208
Has heap override: 0x1
*/