Diff: main.cpp

Revision:

0:63f4520f2953

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 11 10:59:02 2014 +0000
@@ -0,0 +1,56 @@
+#include "mbed.h"   // blinky starts with mbed lib 76, however this was updated to lib 81
+#include "Utility.h"
+//#include "RawSerial.h"
+
+Serial pc(USBTX, USBRX);
+DigitalOut myled(LED1);
+extern "C" void mbed_reset();
+
+void* operator new(size_t size) throw()
+{   
+    void *ptr;
+ 
+    ptr = malloc(size);
+    return ptr;
+}
+ 
+void operator delete(void *ptr) throw()
+{
+   free(ptr);
+}
+ 
+void operator delete[](void *ptr) throw()
+{
+   free(ptr);
+}
+
+int main() {
+    //pc.baud(460800);    // I like a snappy terminal, so crank it up!
+    int f = Free();
+    pc.printf("\r\nBlinky eating memory - Build " __DATE__ " " __TIME__ "\r\n");
+    pc.printf("  %d bytes free\r\n", f);
+    int i = 2000;
+    int total = 0;
+    
+    while(1) {
+        myled = 1;
+        wait(0.2);
+        pc.printf("Allocating %d bytes in addition to %d already allocated.\r\n", i, total);
+        char * p = new char [i];      // This never returns after 24000
+        //char * p = (char *)malloc(i);     // This fails gracefully with NULL return after 24000
+        pc.printf("  %d bytes free.\r\n", Free());
+        __heapvalid((__heapprt)fprintf, stdout, 0);
+        if (p) {
+            total += i;
+            pc.printf("  Success! \r\n");
+        } else {
+            pc.printf("  Failed...\r\n");
+            break;
+        }
+        myled = 0;
+        wait(0.2);
+    }
+    pc.printf("done.\r\n");
+    while (!pc.readable()) {}
+    mbed_reset();
+}