COCleverOS
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Allocator And Leak Demo

Demonstrate allocation accounting and leak reporting hooks for future product firmware.

Download Code Back To Examples
Board LPCXpresso51U68 EVB OM40005
Status Planned
Download cleveros_allocator_leak_demo.c

Run It

Use these commands from the COS workspace when the board and serial adapter are attached.

make -C firmware/lpc51u68_cleveros_alloc_demo clean allmake -C firmware/lpc51u68_cleveros_alloc_demo flashpython3 tools/uart_viewer.py --device <serial-device> --baud 9600

What To Look For

  • Each allocation is tagged by task.
  • The report task prints current and peak use.
  • The demo intentionally leaves one block allocated to prove leak detection.
Download Code From This Website Open Repository 
static void task_allocator_demo(void)
{
    void *buffer = rtos_malloc_tagged(64u, "telemetry");
    rtos_free(buffer);

    (void)rtos_malloc_tagged(16u, "intentional-leak");

    for (;;) {
        rtos_alloc_report_t report = rtos_alloc_report();
        cos_lpc51u68_uart0_puts("alloc current ");
        cos_lpc51u68_uart0_put_hex32(report.current_bytes);
        cos_lpc51u68_uart0_puts(" peak ");
        cos_lpc51u68_uart0_put_hex32(report.peak_bytes);
        cos_lpc51u68_uart0_puts(" leaks ");
        cos_lpc51u68_uart0_put_hex32(report.leak_count);
        cos_lpc51u68_uart0_puts("\r\n");
        rtos_delay_ticks(1000u);
    }
}