From fdf38ab2eb918cc4a7f263ef66174d358bf46fa2 Mon Sep 17 00:00:00 2001
From: Ruben Ayrapetyan <r.ayrapetyan@samsung.com>
Date: Mon, 7 Sep 2015 20:10:16 +0300
Subject: [PATCH] Introduce GC stress testing mode (-mem_stress_test prefix;
 for example: debug.linux-mem_stress_test).

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
---
 CMakeLists.txt                 | 4 ++++
 Makefile                       | 2 +-
 jerry-core/CMakeLists.txt      | 4 ++++
 jerry-core/mem/mem-heap.cpp    | 4 ++++
 jerry-core/mem/mem-poolman.cpp | 9 +++++++--
 5 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0db99038..116e81f08 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -154,10 +154,14 @@ project (Jerry CXX C ASM)
  # Memory statistics
   set(MODIFIER_SUFFIX_MEMORY_STATISTICS -mem_stats)
 
+ # Memory management stress-test mode
+  set(MODIFIER_SUFFIX_MEM_STRESS_TEST -mem_stress_test)
+
 # Modifier lists
  # Linux
   set(MODIFIERS_LISTS_LINUX
      "FULL_PROFILE"
+     "FULL_PROFILE MEM_STRESS_TEST"
      "COMPACT_PROFILE"
      "COMPACT_PROFILE_MINIMAL"
      "FULL_PROFILE MEMORY_STATISTICS"
diff --git a/Makefile b/Makefile
index f2f3881ea..1ba82dfa3 100644
--- a/Makefile
+++ b/Makefile
@@ -97,7 +97,7 @@ export TARGET_RELEASE_MODES = release
 
 export TARGET_PC_SYSTEMS = linux
 
-export TARGET_PC_MODS = cp cp_minimal mem_stats
+export TARGET_PC_MODS = cp cp_minimal mem_stats mem_stress_test
 
 export TARGET_MCU_MODS = cp cp_minimal
 
diff --git a/jerry-core/CMakeLists.txt b/jerry-core/CMakeLists.txt
index 7e4d1ae1f..40dfc8989 100644
--- a/jerry-core/CMakeLists.txt
+++ b/jerry-core/CMakeLists.txt
@@ -70,6 +70,10 @@ project (JerryCore CXX C ASM)
        CONFIG_ECMA_COMPACT_PROFILE_DISABLE_MATH_BUILTIN
        CONFIG_ECMA_COMPACT_PROFILE_DISABLE_JSON_BUILTIN)
 
+  # Memory management stress-test mode
+   set(DEFINES_MEM_STRESS_TEST
+       MEM_GC_BEFORE_EACH_ALLOC)
+
  # Memory statistics
   set(DEFINES_MEMORY_STATISTICS MEM_STATS)
 
diff --git a/jerry-core/mem/mem-heap.cpp b/jerry-core/mem/mem-heap.cpp
index e08529fef..8e6c61e1e 100644
--- a/jerry-core/mem/mem-heap.cpp
+++ b/jerry-core/mem/mem-heap.cpp
@@ -489,6 +489,10 @@ mem_heap_alloc_block_try_give_memory_back (size_t size_in_bytes, /**< size of re
                                                                                  *   (one-chunked or general) */
                                            mem_heap_alloc_term_t alloc_term) /**< expected allocation term */
 {
+#ifdef MEM_GC_BEFORE_EACH_ALLOC
+  mem_run_try_to_give_memory_back_callbacks (MEM_TRY_GIVE_MEMORY_BACK_SEVERITY_CRITICAL);
+#endif /* MEM_GC_BEFORE_EACH_ALLOC */
+
   size_t chunks = mem_get_block_chunks_count_from_data_size (size_in_bytes);
   if ((mem_heap_allocated_chunks + chunks) * MEM_HEAP_CHUNK_SIZE >= mem_heap_limit)
   {
diff --git a/jerry-core/mem/mem-poolman.cpp b/jerry-core/mem/mem-poolman.cpp
index 09076f88d..96ff7ed29 100644
--- a/jerry-core/mem/mem-poolman.cpp
+++ b/jerry-core/mem/mem-poolman.cpp
@@ -24,14 +24,15 @@
  * Memory pool manager implementation
  */
 
-#define JERRY_MEM_POOL_INTERNAL
-
 #include "jrt.h"
 #include "jrt-libc-includes.h"
 #include "mem-allocator.h"
 #include "mem-heap.h"
 #include "mem-poolman.h"
 
+#define MEM_ALLOCATOR_INTERNAL
+#include "mem-allocator-internal.h"
+
 /**
  * Size of a pool
  */
@@ -521,6 +522,10 @@ mem_pools_alloc_longpath (void)
 uint8_t* __attr_always_inline___
 mem_pools_alloc (void)
 {
+#ifdef MEM_GC_BEFORE_EACH_ALLOC
+  mem_run_try_to_give_memory_back_callbacks (MEM_TRY_GIVE_MEMORY_BACK_SEVERITY_CRITICAL);
+#endif /* MEM_GC_BEFORE_EACH_ALLOC */
+
   mem_check_pools ();
 
   do