Improve pvPortMalloc() and family.

fix(esp8266): If MEMLEAK_DEBUG is defined, create an alternate function
called `.._trace` that for each of `pvPortMalloc`, `pvPortZalloc`,
`pvPortCalloc` and `vPortFree`. The original function delegates to this new
tracing function but uses NULL and 0 for the file and line number. This ensures
that the pvPortMalloc exists as a symbol that can be used by the binary blobs
without any problems.

Example output from earlier usage:

~~~
--------Show Malloc--------
F:ppT	L:512	malloc 2064	@ 0x3ffefd08
F:pmT	L:256	malloc 1040	@ 0x3fff0518
F:tiT	L:512	malloc 2064	@ 0x3fff0928
F:uiT	L:640	malloc 2576	@ 0x3fff1138
F:IDLE	L:176	malloc 720	@ 0x3fff1b48
F:Tmr Svc	L:512	malloc 2064	@ 0x3fff1e18
~~~

fix(lwip): Remove declarations of `pvPortMalloc()` and family.

This fixes some of the issues in espressif/ESP8266_RTOS_SDK#189 but some of the
example applications fails. Not ready for merge but comments on my approach
will be appreciated.

components/esp8266/include/esp_libc.h

@@ -118,7 +118,7 @@ bool ICACHE_FLASH_ATTR check_memleak_debug_enable(void)
 #define os_free(s) \
 do{\
     static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-    vPortFree(s, mem_debug_file, __LINE__);\
+    vPortFree_trace(s, mem_debug_file, __LINE__);\
 }while(0)
 #endif
 
@@ -126,7 +126,7 @@ do{\
 #define os_malloc(s)    \
     ({  \
         static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-        pvPortMalloc(s, mem_debug_file, __LINE__, false);  \
+        pvPortMalloc_trace(s, mem_debug_file, __LINE__, false);  \
     })
 #endif
 
@@ -134,7 +134,7 @@ do{\
 #define os_malloc_iram(s)    \
     ({  \
         static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-        pvPortMalloc(s, mem_debug_file, __LINE__, true);  \
+        pvPortMalloc_trace(s, mem_debug_file, __LINE__, true);  \
     })
 #endif
 
@@ -142,7 +142,7 @@ do{\
 #define os_calloc(p, s)    \
     ({  \
         static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-        pvPortCalloc(p, s, mem_debug_file, __LINE__);  \
+        pvPortCalloc_trace(p, s, mem_debug_file, __LINE__);  \
     })
 #endif
 
@@ -150,7 +150,7 @@ do{\
 #define os_realloc(p, s)    \
     ({  \
         static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-        pvPortRealloc(p, s, mem_debug_file, __LINE__);  \
+        pvPortRealloc_trace(p, s, mem_debug_file, __LINE__);  \
     })
 #endif
 
@@ -158,7 +158,7 @@ do{\
 #define os_zalloc(s)    \
     ({  \
         static const char mem_debug_file[] ICACHE_RODATA_ATTR STORE_ATTR = __FILE__;    \
-        pvPortZalloc(s, mem_debug_file, __LINE__);  \
+        pvPortZalloc_trace(s, mem_debug_file, __LINE__);  \
     })
 #endif
 

components/freertos/include/freertos/private/portable.h

@@ -126,8 +126,18 @@ void vPortDefineHeapRegions( const HeapRegion_t * const pxHeapRegions ) PRIVILEG
 /*
  * Map to the memory management routines required for the port.
  */
-//void *pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
-//void vPortFree( void *pv ) PRIVILEGED_FUNCTION;
+void *pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
+void *pvPortZalloc( size_t xWantedSize ) PRIVILEGED_FUNCTION;
+void *pvPortCalloc( size_t count, size_t size ) PRIVILEGED_FUNCTION;
+void vPortFree( void *pv ) PRIVILEGED_FUNCTION;
+
+#ifdef MEMLEAK_DEBUG
+void *pvPortMalloc_trace( size_t xWantedSize, const char * file, unsigned line, bool use_iram ) PRIVILEGED_FUNCTION;
+void *pvPortZalloc_trace( size_t xWantedSize, const char * file, unsigned line ) PRIVILEGED_FUNCTION;
+void *pvPortCalloc_trace( size_t count, size_t size, const char * file, unsigned line ) PRIVILEGED_FUNCTION;
+void vPortFree_trace( void *pv, const char * file, unsigned line ) PRIVILEGED_FUNCTION;
+#endif
+
 void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
 size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;
 size_t xPortGetMinimumEverFreeHeapSize( void ) PRIVILEGED_FUNCTION;

components/freertos/port/esp8266/heap_5.c

@@ -313,10 +313,13 @@ size_t xPortWantedSizeAlign(size_t xWantedSize)
 	return xWantedSize;
 }
 
-#ifndef MEMLEAK_DEBUG
 void *pvPortMalloc( size_t xWantedSize )
-#else
-void *pvPortMalloc( size_t xWantedSize, const char * file, unsigned line, bool use_iram)
+#ifdef MEMLEAK_DEBUG
+{
+    return pvPortMalloc_trace( xWantedSize, NULL, 0, false );
+}
+
+void *pvPortMalloc_trace( size_t xWantedSize, const char * file, unsigned line, bool use_iram )
 #endif
 {
 BlockLink_t *pxBlock, *pxPreviousBlock, *pxNewBlockLink;
@@ -492,12 +495,16 @@ static bool is_inited = false;
 
 	return pvReturn;
 }
+
 /*-----------------------------------------------------------*/
 
-#ifndef MEMLEAK_DEBUG
 void vPortFree( void *pv )
-#else
-void vPortFree(void *pv, const char * file, unsigned line)
+#ifdef MEMLEAK_DEBUG
+{
+    return vPortFree_trace( pv, NULL, 0 );
+}
+
+void vPortFree_trace( void *pv, const char * file, unsigned line )
 #endif
 {
 uint8_t *puc = ( uint8_t * ) pv;
@@ -556,6 +563,7 @@ BlockLink_t *pxLink;
 		}
 	}
 }
+
 /*-----------------------------------------------------------*/
 
 #ifndef MEMLEAK_DEBUG
@@ -615,12 +623,12 @@ void *realloc(void *ptr, size_t nbytes) __attribute__((alias("pvPortRealloc")));
 #else
 
 /*-----------------------------------------------------------*/
-void *pvPortCalloc(size_t count, size_t size, const char * file, unsigned line)
+void *pvPortCalloc_trace(size_t count, size_t size, const char * file, unsigned line)
 {
   void *p;
 //ets_printf("1,");
   /* allocate 'count' objects of size 'size' */
-  p = pvPortMalloc(count * size, file, line, false);
+  p = pvPortMalloc_trace(count * size, file, line, false);
 //ets_printf("2,");
   if (p) {
     /* zero the memory */
@@ -629,59 +637,70 @@ void *pvPortCalloc(size_t count, size_t size, const char * file, unsigned line)
 //ets_printf("3,");
   return p;
 }
-/*-----------------------------------------------------------*/
-
-void *pvPortZalloc(size_t size, const char * file, unsigned line)
-{
-     return pvPortCalloc(1, size, file, line);
+void *pvPortCalloc(size_t count, size_t size) {
+    return pvPortCalloc_trace(count, size, NULL, 0);
 }
 /*-----------------------------------------------------------*/
 
-void *pvPortRealloc(void *mem, size_t newsize, const char *file, unsigned line)
+void *pvPortZalloc_trace(size_t size, const char * file, unsigned line)
+{
+     return pvPortCalloc_trace(1, size, file, line);
+}
+void *pvPortZalloc(size_t size) {
+    return pvPortZalloc_trace( size, NULL, 0 );
+}
+
+/*-----------------------------------------------------------*/
+
+void *pvPortRealloc_trace(void *mem, size_t newsize, const char *file, unsigned line)
 {
     if (newsize == 0) {
-        vPortFree(mem, file, line);
+        vPortFree_trace(mem, file, line);
         return NULL;
     }
 
     void *p;
-    p = pvPortMalloc(newsize, file, line, false);
+    p = pvPortMalloc_trace(newsize, file, line, false);
     if (p) {
         /* zero the memory */
         if (mem != NULL) {
             memcpy(p, mem, newsize);
-            vPortFree(mem, file, line);
+            vPortFree_trace(mem, file, line);
         }
     }
     return p;
 }
+
+void *pvPortRealloc(void *mem, size_t newsize) {
+    return pvPortRealloc_trace(mem, newsize, NULL, 0 );
+}
 /*-----------------------------------------------------------*/
 //For user
 void *malloc(size_t nbytes)
 {
 //ets_printf("u_m\n");
-	return pvPortMalloc( nbytes, mem_debug_file, 0, false);
+	return pvPortMalloc_trace( nbytes, mem_debug_file, 0, false);
 }
 
 void free(void *ptr)
 {
 //ets_printf("u_f\n");
-	vPortFree(ptr, mem_debug_file, 0);
+	vPortFree_trace(ptr, mem_debug_file, 0);
 }
 
 void *zalloc(size_t nbytes)
 {
-	return pvPortZalloc(nbytes, mem_debug_file, 0);
+	return pvPortZalloc_trace(nbytes, mem_debug_file, 0);
 }
 
 void *calloc(size_t count, size_t nbytes)
 {
-	return pvPortCalloc(count, nbytes, mem_debug_file, 0);
+	return pvPortCalloc_trace(count, nbytes, mem_debug_file, 0);
 }
 
 void *realloc(void *ptr, size_t nbytes)
 {
-	return pvPortRealloc(ptr, nbytes, mem_debug_file, 0);
+	return pvPortRealloc_trace(ptr, nbytes, mem_debug_file, 0);
 }
 
 /*

components/lwip/port/esp8266/include/lwipopts.h

@@ -194,10 +194,6 @@
 /**
  * Use DRAM instead of IRAM
  */
-extern void *pvPortMalloc( size_t xWantedSize, const char * file, unsigned line, bool use_iram);
-extern void *pvPortZalloc( size_t xWantedSize, const char * file, unsigned line);
-extern void *pvPortCalloc(size_t count, size_t size, const char * file, unsigned line);
-extern void vPortFree(void *pv, const char * file, unsigned line);
 #define mem_clib_free os_free
 #define mem_clib_malloc os_malloc
 #define mem_clib_calloc os_calloc

components/newlib/newlib/port/syscall.c

@@ -21,6 +21,7 @@
 #include "esp8266/ets_sys.h"
 #include "esp8266/eagle_soc.h"
 #include "esp8266/uart_register.h"
+#include "FreeRTOS.h"
 
 #define PANIC_UART 0
 
@@ -91,7 +92,11 @@ void _sbrk_r(void *ptr, int incr)
 
 void *_malloc_r(struct _reent *r, size_t n)
 {
+#ifndef MEMLEAK_DEBUG
     return pvPortMalloc(n);
+#else
+    return pvPortMalloc_trace(n, NULL, 0, false);
+#endif
 }
 
 void *_realloc_r(struct _reent *r, void *old_ptr, size_t n)