Revision 1:97b1710fd9c3, committed 2013-07-25

Comitter:

tass

Date:

Thu Jul 25 05:44:19 2013 +0000

Parent:

0:8ac2e5a7f731

Child:

2:6da40f9e8301

Commit message:

Added memory statistics.

Changed in this revision

--- a/main.cpp	Wed Jul 24 05:26:23 2013 +0000
+++ b/main.cpp	Thu Jul 25 05:44:19 2013 +0000
@@ -1,4 +1,5 @@
 #include "mbed.h"
+#include <stdarg.h>
 #include "EthernetInterface.h"
 
 #define msgdbg(...)
@@ -6,8 +7,8 @@
 //#define msgdbg printf
 
 
-#define SENDING_RETRIES    5u
-#define READING_RETRIES    5u
+#define SENDING_RETRIES    3u
+#define READING_RETRIES    3u
 #define DHCP_RETRIES       10u
 #define BUFFER_SIZE        256
 
@@ -41,6 +42,7 @@
     {NXP_HOST_REQUEST,NXP_HOST,0,0,0x7FFFFFFF,0}
 };
 
+void inline printMemoryStats(void);
 void printStatistics(void)
 {
     printf("\nTotal Time : %f seconds\n",(float)totalTime/1000.0f);    
@@ -52,9 +54,67 @@
         printf("Avg duration : %d ms\n",webStatistics[i].avgDuration);
         printf("Total snapshots : %d\n\n",webStatistics[i].snapshots);
     }
+    printMemoryStats();    
+}
+
+struct MemoryUsage
+{
+    uint32_t curFreeRam;
+    uint32_t minFreeRam;
+    uint32_t maxFreeRam;
+    uint32_t avgFreeRam;
+    uint32_t stackPointer;
+    uint32_t cntSamples;
+};
+
+struct MemoryUsage memoryStats = {0,0xFFFFFFFF,0,0,0};
+
+int fakePrintf(void* pvHeapInfo, char const* pFormatString, ...)
+{
+    struct MemoryUsage * memStat = (struct MemoryUsage *)pvHeapInfo;
+    static const char* freeRamFormat = "%d bytes in";
+    va_list valist;
     
+    if(memcmp(pFormatString,freeRamFormat,strlen(freeRamFormat)) == 0)
+    {
+        va_start(valist, pFormatString);
+        unsigned long freeSize = va_arg(valist, unsigned long);
+        memStat->curFreeRam = freeSize;
+        if(memStat->minFreeRam > freeSize)
+            memStat->minFreeRam = freeSize;
+        
+        if(memStat->maxFreeRam < freeSize)
+            memStat->maxFreeRam = freeSize;
+            
+        memStat->avgFreeRam = ((memStat->avgFreeRam * memStat->cntSamples) + freeSize)/(++memStat->cntSamples);
+    }
+    else
+    {
+        // ignore format
+    }
+    return 0;
 }
 
+void inline printMemoryStats(void)
+{
+    if(memoryStats.cntSamples == 1)
+        printf("\n\n***** Initial Memory Report *****\n");
+    else
+        printf("\n\n********* Memory Report *********\n");
+    
+    printf("Current free memory : %d bytes\n",memoryStats.curFreeRam);
+    printf("Maximum free memory : %d bytes\n",memoryStats.maxFreeRam);
+    printf("Minimum free memory : %d bytes\n",memoryStats.minFreeRam);
+    printf("Average free memory : %d bytes\n",memoryStats.avgFreeRam);
+    printf("****************************\n");
+}
+
+void inline memoryStamp(void)
+{
+    __heapstats((__heapprt)fakePrintf, &memoryStats);
+}
+
+
 int main() {
     
     int retries = 0;
@@ -98,6 +158,7 @@
                 continue;
             }                    
             
+            client.set_blocking(false,1500);
             retries = 0;
             
             // sending request
@@ -145,6 +206,7 @@
             printf("Received : %d bytes\n",received);
             webStatistics[i].avgDuration = ((webStatistics[i].avgDuration *(webStatistics[i].snapshots++) ) + time)/webStatistics[i].snapshots;
             totalTime += time;
+            memoryStamp();
         }
         
         printStatistics();