mbed_controller / Mbed 2 deprecated mbed_controller_demo

Typical controller demo program based on Seeed Arch Max. Features: - Multi-thread architecture - Inter-thread message communication - Independent command shell using thread - HTTPD with CGI, WS, RPC - Key & value pair configuration load/save

Dependencies:   CMDB EthernetInterface HTTPD dconfig mbed-rpc mbed-rtos mbed storage_on_flash

util.cpp@3:df8a882e33a6, 2015-07-03 (annotated)

Committer:
hillkim7
Date:
Fri Jul 03 11:53:23 2015 +0000
Revision:
3:df8a882e33a6
Parent:
0:2ffd10976643 
Fix stack overflow problem in console task.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hillkim7 0:2ffd10976643 1 /**
hillkim7 0:2ffd10976643 2 * @file util.cpp
hillkim7 0:2ffd10976643 3 *
hillkim7 0:2ffd10976643 4 * @brief system wide utility function
hillkim7 0:2ffd10976643 5 *
hillkim7 0:2ffd10976643 6 */
hillkim7 0:2ffd10976643 7
hillkim7 0:2ffd10976643 8 #include <stdio.h>
hillkim7 0:2ffd10976643 9 #include <stdarg.h>
hillkim7 0:2ffd10976643 10 #include <stdlib.h>
hillkim7 0:2ffd10976643 11 #include <stdint.h>
hillkim7 0:2ffd10976643 12 #include <string.h>
hillkim7 0:2ffd10976643 13
hillkim7 0:2ffd10976643 14 #if defined(__CC_ARM) && !defined(__MICROLIB)
hillkim7 0:2ffd10976643 15 // Keil MDK with microlib supports __heapstats();
hillkim7 0:2ffd10976643 16 #define SUPPORT_HEAPSTATS
hillkim7 0:2ffd10976643 17 #endif
hillkim7 0:2ffd10976643 18
hillkim7 0:2ffd10976643 19 #if defined(SUPPORT_HEAPSTATS)
hillkim7 0:2ffd10976643 20
hillkim7 0:2ffd10976643 21 static void heap_printf(void *dummy, const char *fmt, ...)
hillkim7 0:2ffd10976643 22 {
hillkim7 0:2ffd10976643 23 va_list arg_ptr;
hillkim7 0:2ffd10976643 24
hillkim7 0:2ffd10976643 25 if (strchr(fmt, '\n') != NULL) {
hillkim7 0:2ffd10976643 26 putchar('\r');
hillkim7 0:2ffd10976643 27 }
hillkim7 0:2ffd10976643 28 va_start(arg_ptr, fmt);
hillkim7 0:2ffd10976643 29 vprintf(fmt, arg_ptr);
hillkim7 0:2ffd10976643 30 va_end(arg_ptr);
hillkim7 0:2ffd10976643 31 }
hillkim7 0:2ffd10976643 32
hillkim7 0:2ffd10976643 33 void print_memstat(void)
hillkim7 0:2ffd10976643 34 {
hillkim7 0:2ffd10976643 35 __heapstats((__heapprt)heap_printf, NULL);
hillkim7 0:2ffd10976643 36 printf("\r\n");
hillkim7 0:2ffd10976643 37 }
hillkim7 0:2ffd10976643 38
hillkim7 0:2ffd10976643 39 #else
hillkim7 0:2ffd10976643 40
hillkim7 0:2ffd10976643 41 /**
hillkim7 0:2ffd10976643 42 * Compute max consecutive memory chunk, by trying to allocate it.
hillkim7 0:2ffd10976643 43 */
hillkim7 0:2ffd10976643 44 static uint32_t comput_free_heap(uint32_t resolution, uint32_t maximum)
hillkim7 0:2ffd10976643 45 {
hillkim7 0:2ffd10976643 46 int low = 0;
hillkim7 0:2ffd10976643 47 int high = maximum + 1;
hillkim7 0:2ffd10976643 48
hillkim7 0:2ffd10976643 49 while (high - low > resolution) {
hillkim7 0:2ffd10976643 50 int mid = (low + high) / 2;
hillkim7 0:2ffd10976643 51 void* p = malloc(mid);
hillkim7 0:2ffd10976643 52 if (p == NULL) {
hillkim7 0:2ffd10976643 53 high = mid;
hillkim7 0:2ffd10976643 54 } else {
hillkim7 0:2ffd10976643 55 free(p);
hillkim7 0:2ffd10976643 56 low = mid;
hillkim7 0:2ffd10976643 57 }
hillkim7 0:2ffd10976643 58 }
hillkim7 0:2ffd10976643 59
hillkim7 0:2ffd10976643 60 return low;
hillkim7 0:2ffd10976643 61 }
hillkim7 0:2ffd10976643 62
hillkim7 0:2ffd10976643 63 void print_memstat(void)
hillkim7 0:2ffd10976643 64 {
hillkim7 0:2ffd10976643 65 printf("heap free %u\r\n", comput_free_heap(512, 192*1024));
hillkim7 0:2ffd10976643 66 }
hillkim7 0:2ffd10976643 67
hillkim7 0:2ffd10976643 68 #endif
hillkim7 0:2ffd10976643 69
hillkim7 0:2ffd10976643 70