diff options
| -rw-r--r-- | .github/workflows/action_utest.yml | 2 | ||||
| -rw-r--r-- | examples/utest/configs/kernel/config.h | 304 | ||||
| -rw-r--r-- | examples/utest/testcases/Kconfig | 1 | ||||
| -rw-r--r-- | examples/utest/testcases/kernel/Kconfig | 8 | ||||
| -rw-r--r-- | examples/utest/testcases/kernel/SConscript | 15 | ||||
| -rw-r--r-- | examples/utest/testcases/kernel/memheap_tc.c | 100 | ||||
| -rw-r--r-- | examples/utest/testcases/utest/pass_tc.c | 2 | ||||
| -rw-r--r-- | src/memheap.c | 68 |
8 files changed, 465 insertions, 35 deletions
diff --git a/.github/workflows/action_utest.yml b/.github/workflows/action_utest.yml index 9b5b14f984..22e4505177 100644 --- a/.github/workflows/action_utest.yml +++ b/.github/workflows/action_utest.yml @@ -11,7 +11,7 @@ jobs: fail-fast: false matrix: legs: - - {UTEST: "kernel/ipc", RTT_BSP: "bsp/qemu-vexpress-a9", QEMU_ARCH: "vexpress-a9", CONFIG_FILE: "examples/utest/configs/utest_self/config.h"} + - {UTEST: "kernel/mem", RTT_BSP: "bsp/qemu-vexpress-a9", QEMU_ARCH: "vexpress-a9", CONFIG_FILE: "examples/utest/configs/kernel/config.h"} - {UTEST: "components/utest", RTT_BSP: "bsp/qemu-vexpress-a9", QEMU_ARCH: "vexpress-a9", CONFIG_FILE: "examples/utest/configs/utest_self/config.h"} env: diff --git a/examples/utest/configs/kernel/config.h b/examples/utest/configs/kernel/config.h new file mode 100644 index 0000000000..c7fcb763fb --- /dev/null +++ b/examples/utest/configs/kernel/config.h @@ -0,0 +1,304 @@ +#ifndef RT_CONFIG_H__ +#define RT_CONFIG_H__ + +/* Automatically generated file; DO NOT EDIT. */ +/* RT-Thread Project Configuration */ + +/* RT-Thread Kernel */ + +#define RT_NAME_MAX 8 +#define RT_USING_SMP +#define RT_CPUS_NR 2 +#define RT_ALIGN_SIZE 4 +#define RT_THREAD_PRIORITY_32 +#define RT_THREAD_PRIORITY_MAX 32 +#define RT_TICK_PER_SECOND 100 +#define RT_USING_OVERFLOW_CHECK +#define RT_USING_HOOK +#define RT_USING_IDLE_HOOK +#define RT_IDLE_HOOK_LIST_SIZE 4 +#define IDLE_THREAD_STACK_SIZE 1024 +#define RT_USING_TIMER_SOFT +#define RT_TIMER_THREAD_PRIO 4 +#define RT_TIMER_THREAD_STACK_SIZE 1024 + +/* kservice optimization */ + +#define RT_DEBUG +#define RT_DEBUG_COLOR + +/* Inter-Thread communication */ + +#define RT_USING_SEMAPHORE +#define RT_USING_MUTEX +#define RT_USING_EVENT +#define RT_USING_MAILBOX +#define RT_USING_MESSAGEQUEUE +#define RT_USING_SIGNALS + +/* Memory Management */ + +#define RT_USING_MEMPOOL +#define RT_USING_MEMHEAP +#define RT_USING_SMALL_MEM +#define RT_USING_MEMTRACE +#define RT_USING_HEAP + +/* Kernel Device Object */ + +#define RT_USING_DEVICE +#define RT_USING_DEVICE_OPS +#define RT_USING_INTERRUPT_INFO +#define RT_USING_CONSOLE +#define RT_CONSOLEBUF_SIZE 256 +#define RT_CONSOLE_DEVICE_NAME "uart0" +#define RT_VER_NUM 0x40004 +#define ARCH_ARM +#define RT_USING_CPU_FFS +#define ARCH_ARM_CORTEX_A +#define RT_USING_GIC_V2 +#define ARCH_ARM_CORTEX_A9 + +/* RT-Thread Components */ + +#define RT_USING_COMPONENTS_INIT +#define RT_USING_USER_MAIN +#define RT_MAIN_THREAD_STACK_SIZE 2048 +#define RT_MAIN_THREAD_PRIORITY 10 + +/* C++ features */ + +#define RT_USING_CPLUSPLUS + +/* Command shell */ + +#define RT_USING_FINSH +#define FINSH_THREAD_NAME "tshell" +#define FINSH_USING_HISTORY +#define FINSH_HISTORY_LINES 5 +#define FINSH_USING_SYMTAB +#define FINSH_USING_DESCRIPTION +#define FINSH_THREAD_PRIORITY 20 +#define FINSH_THREAD_STACK_SIZE 4096 +#define FINSH_CMD_SIZE 80 +#define FINSH_USING_MSH +#define FINSH_USING_MSH_DEFAULT +#define FINSH_ARG_MAX 10 + +/* Device virtual file system */ + +#define RT_USING_DFS +#define DFS_USING_WORKDIR +#define DFS_FILESYSTEMS_MAX 4 +#define DFS_FILESYSTEM_TYPES_MAX 8 +#define DFS_FD_MAX 32 +#define RT_USING_DFS_ELMFAT + +/* elm-chan's FatFs, Generic FAT Filesystem Module */ + +#define RT_DFS_ELM_CODE_PAGE 437 +#define RT_DFS_ELM_WORD_ACCESS +#define RT_DFS_ELM_USE_LFN_3 +#define RT_DFS_ELM_USE_LFN 3 +#define RT_DFS_ELM_LFN_UNICODE_0 +#define RT_DFS_ELM_LFN_UNICODE 0 +#define RT_DFS_ELM_MAX_LFN 255 +#define RT_DFS_ELM_DRIVES 2 +#define RT_DFS_ELM_MAX_SECTOR_SIZE 4096 +#define RT_DFS_ELM_REENTRANT +#define RT_USING_DFS_DEVFS +#define RT_USING_DFS_ROMFS +#define RT_USING_DFS_RAMFS + +/* Device Drivers */ + +#define RT_USING_DEVICE_IPC +#define RT_PIPE_BUFSZ 512 +#define RT_USING_SYSTEM_WORKQUEUE +#define RT_SYSTEM_WORKQUEUE_STACKSIZE 2048 +#define RT_SYSTEM_WORKQUEUE_PRIORITY 23 +#define RT_USING_SERIAL +#define RT_SERIAL_USING_DMA +#define RT_SERIAL_RB_BUFSZ 64 +#define RT_USING_I2C +#define RT_USING_I2C_BITOPS +#define RT_USING_PIN +#define RT_USING_MTD_NOR +#define RT_USING_MTD_NAND +#define RT_MTD_NAND_DEBUG +#define RT_USING_RTC +#define RT_USING_SOFT_RTC +#define RT_USING_SDIO +#define RT_SDIO_STACK_SIZE 512 +#define RT_SDIO_THREAD_PRIORITY 15 +#define RT_MMCSD_STACK_SIZE 1024 +#define RT_MMCSD_THREAD_PREORITY 22 +#define RT_MMCSD_MAX_PARTITION 16 +#define RT_USING_SPI +#define RT_USING_SPI_MSD +#define RT_USING_SFUD +#define RT_SFUD_USING_SFDP +#define RT_SFUD_USING_FLASH_INFO_TABLE +#define RT_SFUD_SPI_MAX_HZ 50000000 +#define RT_USING_WDT + +/* Using USB */ + + +/* POSIX layer and C standard library */ + +#define RT_USING_LIBC +#define RT_USING_PTHREADS +#define PTHREAD_NUM_MAX 8 +#define RT_USING_POSIX +#define RT_USING_POSIX_MMAP +#define RT_USING_POSIX_TERMIOS +#define RT_USING_POSIX_GETLINE +#define RT_USING_POSIX_AIO +#define RT_LIBC_FIXED_TIMEZONE 8 + +/* Network */ + +/* Socket abstraction layer */ + +#define RT_USING_SAL +#define SAL_INTERNET_CHECK + +/* protocol stack implement */ + +#define SAL_USING_LWIP +#define SAL_USING_POSIX + +/* Network interface device */ + +#define RT_USING_NETDEV +#define NETDEV_USING_IFCONFIG +#define NETDEV_USING_PING +#define NETDEV_USING_NETSTAT +#define NETDEV_USING_AUTO_DEFAULT +#define NETDEV_IPV4 1 +#define NETDEV_IPV6 0 + +/* light weight TCP/IP stack */ + +#define RT_USING_LWIP +#define RT_USING_LWIP202 +#define RT_LWIP_MEM_ALIGNMENT 4 +#define RT_LWIP_ICMP +#define RT_LWIP_DNS +#define RT_LWIP_DHCP +#define IP_SOF_BROADCAST 1 +#define IP_SOF_BROADCAST_RECV 1 + +/* Static IPv4 Address */ + +#define RT_LWIP_IPADDR "192.168.1.30" +#define RT_LWIP_GWADDR "192.168.1.1" +#define RT_LWIP_MSKADDR "255.255.255.0" +#define RT_LWIP_UDP +#define RT_LWIP_TCP +#define RT_LWIP_RAW +#define RT_MEMP_NUM_NETCONN 8 +#define RT_LWIP_PBUF_NUM 16 +#define RT_LWIP_RAW_PCB_NUM 4 +#define RT_LWIP_UDP_PCB_NUM 4 +#define RT_LWIP_TCP_PCB_NUM 4 +#define RT_LWIP_TCP_SEG_NUM 40 +#define RT_LWIP_TCP_SND_BUF 8196 +#define RT_LWIP_TCP_WND 8196 +#define RT_LWIP_TCPTHREAD_PRIORITY 10 +#define RT_LWIP_TCPTHREAD_MBOX_SIZE 8 +#define RT_LWIP_TCPTHREAD_STACKSIZE 1024 +#define RT_LWIP_ETHTHREAD_PRIORITY 12 +#define RT_LWIP_ETHTHREAD_STACKSIZE 1024 +#define RT_LWIP_ETHTHREAD_MBOX_SIZE 8 +#define RT_LWIP_REASSEMBLY_FRAG +#define LWIP_NETIF_STATUS_CALLBACK 1 +#define LWIP_NETIF_LINK_CALLBACK 1 +#define SO_REUSE 1 +#define LWIP_SO_RCVTIMEO 1 +#define LWIP_SO_SNDTIMEO 1 +#define LWIP_SO_RCVBUF 1 +#define LWIP_SO_LINGER 0 +#define LWIP_NETIF_LOOPBACK 0 +#define RT_LWIP_USING_PING + +/* AT commands */ + + +/* VBUS(Virtual Software BUS) */ + + +/* Utilities */ + +#define RT_USING_UTEST +#define UTEST_THR_STACK_SIZE 4096 +#define UTEST_THR_PRIORITY 20 +#define RT_USING_LWP + +/* RT-Thread Utestcases */ + +#define RT_USING_UTESTCASES + +/* Utest Self Testcase */ + +#define UTEST_SELF_PASS_TC + +/* Kernel memheap stability Testcase */ + +#define UTEST_MEMHEAP_TC + +/* RT-Thread online packages */ + +/* IoT - internet of things */ + + +/* Wi-Fi */ + +/* Marvell WiFi */ + + +/* Wiced WiFi */ + + +/* IoT Cloud */ + + +/* security packages */ + + +/* language packages */ + + +/* multimedia packages */ + + +/* tools packages */ + + +/* system packages */ + + +/* Micrium: Micrium software products porting for RT-Thread */ + + +/* peripheral libraries and drivers */ + + +/* AI packages */ + + +/* miscellaneous packages */ + + +/* samples: kernel and components samples */ + + +/* entertainment: terminal games and other interesting software packages */ + +#define SOC_VEXPRESS_A9 +#define RT_USING_UART0 +#define RT_USING_UART1 +#define BSP_DRV_EMAC + +#endif diff --git a/examples/utest/testcases/Kconfig b/examples/utest/testcases/Kconfig index da80eb30ae..a9b556f1e3 100644 --- a/examples/utest/testcases/Kconfig +++ b/examples/utest/testcases/Kconfig @@ -8,6 +8,7 @@ config RT_USING_UTESTCASES if RT_USING_UTESTCASES source "$RTT_DIR/examples/utest/testcases/utest/Kconfig" +source "$RTT_DIR/examples/utest/testcases/kernel/Kconfig" endif diff --git a/examples/utest/testcases/kernel/Kconfig b/examples/utest/testcases/kernel/Kconfig new file mode 100644 index 0000000000..14334af16f --- /dev/null +++ b/examples/utest/testcases/kernel/Kconfig @@ -0,0 +1,8 @@ +menu "Kernel Testcase" + +config UTEST_MEMHEAP_TC + bool "memheap stability test" + default y + depends on RT_USING_MEMHEAP + +endmenu diff --git a/examples/utest/testcases/kernel/SConscript b/examples/utest/testcases/kernel/SConscript new file mode 100644 index 0000000000..9411cdd9a0 --- /dev/null +++ b/examples/utest/testcases/kernel/SConscript @@ -0,0 +1,15 @@ +Import('rtconfig') +from building import * + +cwd = GetCurrentDir() +src = Split(''' +''') + +if GetDepend(['UTEST_MEMHEAP_TC']): + src += ['memheap_tc.c'] + +CPPPATH = [cwd] + +group = DefineGroup('utestcases', src, depend = [], CPPPATH = CPPPATH) + +Return('group') diff --git a/examples/utest/testcases/kernel/memheap_tc.c b/examples/utest/testcases/kernel/memheap_tc.c new file mode 100644 index 0000000000..ee52bdb185 --- /dev/null +++ b/examples/utest/testcases/kernel/memheap_tc.c @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2006-2019, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2019-01-16 flybreak the first version + */ + +#include <rtthread.h> +#include <stdlib.h> +#include "utest.h" + +#define HEAP_SIZE (64 * 1024) +#define HEAP_ALIGN (4) +#define SLICE_NUM (40) +#define TEST_TIMES (100000) +#define HEAP_NAME "heap1" +#define SLICE_SIZE_MAX (HEAP_SIZE/SLICE_NUM) + +static void memheap_test(void) +{ + struct rt_memheap heap1; + rt_uint32_t ptr_start; + void *ptr[SLICE_NUM]; + int i, cnt = 0; + + /* init heap */ + ptr_start = (rt_uint32_t)rt_malloc_align(HEAP_SIZE, HEAP_ALIGN); + if (ptr_start == RT_NULL) + { + rt_kprintf("totle size too big,can not malloc memory!"); + return; + } + + rt_memheap_init(&heap1, HEAP_NAME, (void *)ptr_start, HEAP_SIZE); + + /* test start */ + for (i = 0; i < SLICE_NUM; i++) + { + ptr[i] = 0; + } + /* test alloc */ + for (i = 0; i < SLICE_NUM; i++) + { + rt_uint32_t slice_size = rand() % SLICE_SIZE_MAX; + ptr[i] = rt_memheap_alloc(&heap1, slice_size); + } + /* test realloc */ + while (cnt < TEST_TIMES) + { + rt_uint32_t slice_size = rand() % SLICE_SIZE_MAX; + rt_uint32_t ptr_index = rand() % SLICE_NUM; + rt_uint32_t operation = rand() % 2; + + if (ptr[ptr_index]) + { + if (operation == 0) /* free and malloc */ + { + if (ptr[ptr_index]) + { + rt_memheap_free(ptr[ptr_index]); + } + ptr[ptr_index] = rt_memheap_alloc(&heap1, slice_size); + } + else /* realloc */ + { + ptr[ptr_index] = rt_memheap_realloc(&heap1, ptr[ptr_index], slice_size); + } + } + cnt ++; + if (cnt % (TEST_TIMES / 10) == 0) + { + rt_kprintf(">"); + } + } + + rt_kprintf("test OK!\n"); + + /* test end */ + rt_memheap_detach(&heap1); + rt_free_align((void *)ptr_start); +} + +static rt_err_t utest_tc_init(void) +{ + return RT_EOK; +} + +static rt_err_t utest_tc_cleanup(void) +{ + return RT_EOK; +} + +static void testcase(void) +{ + UTEST_UNIT_RUN(memheap_test); +} +UTEST_TC_EXPORT(testcase, "testcases.kernel.memheap_tc", utest_tc_init, utest_tc_cleanup, 10); diff --git a/examples/utest/testcases/utest/pass_tc.c b/examples/utest/testcases/utest/pass_tc.c index 8e93e35b9b..c9ee912fbf 100644 --- a/examples/utest/testcases/utest/pass_tc.c +++ b/examples/utest/testcases/utest/pass_tc.c @@ -43,4 +43,4 @@ static void testcase(void) { UTEST_UNIT_RUN(test_assert_pass); } -UTEST_TC_EXPORT(testcase, "testcases.utest.pass_tc", utest_tc_init, utest_tc_cleanup, 10);
\ No newline at end of file +UTEST_TC_EXPORT(testcase, "testcases.utest.pass_tc", utest_tc_init, utest_tc_cleanup, 10); diff --git a/src/memheap.c b/src/memheap.c index 63327575cc..35a04c14b1 100644 --- a/src/memheap.c +++ b/src/memheap.c @@ -17,6 +17,7 @@ * 2013-05-24 Bernard fix the rt_memheap_realloc issue. * 2013-07-11 Grissiom fix the memory block splitting issue. * 2013-07-15 Grissiom optimize rt_memheap_realloc + * 2021-06-03 Flybreak Fix the crash problem after opening Oz optimization on ac6. */ #include <rthw.h> @@ -41,31 +42,31 @@ rt_inline void rt_memheap_setname(struct rt_memheap_item *item, const char *name) { int index; - rt_uint8_t* ptr; + rt_uint8_t *ptr; - ptr = (rt_uint8_t*)&(item->next_free); - for (index = 0; index < sizeof(void*); index ++) + ptr = (rt_uint8_t *) & (item->next_free); + for (index = 0; index < sizeof(void *); index ++) { if (name[index] == '\0') break; ptr[index] = name[index]; } if (name[index] == '\0') ptr[index] = '\0'; - else + else { - ptr = (rt_uint8_t*)&(item->prev_free); - for (index = 0; index < sizeof(void*) && (index + sizeof(void*))< RT_NAME_MAX; index ++) + ptr = (rt_uint8_t *) & (item->prev_free); + for (index = 0; index < sizeof(void *) && (index + sizeof(void *)) < RT_NAME_MAX; index ++) { - if (name[sizeof(void*) + index] == '\0') break; - ptr[index] = name[sizeof(void*) + index]; + if (name[sizeof(void *) + index] == '\0') break; + ptr[index] = name[sizeof(void *) + index]; } - if (name[sizeof(void*) + index] == '\0') ptr[index] = '\0'; + if (name[sizeof(void *) + index] == '\0') ptr[index] = '\0'; } } -void rt_mem_set_tag(void* ptr, const char* name) +void rt_mem_set_tag(void *ptr, const char *name) { - struct rt_memheap_item* item; + struct rt_memheap_item *item; if (ptr && name) { @@ -369,7 +370,8 @@ void *rt_memheap_realloc(struct rt_memheap *heap, void *ptr, rt_size_t newsize) if (newsize > oldsize) { void *new_ptr; - struct rt_memheap_item *next_ptr; + /* Fix the crash problem after opening Oz optimization on ac6 */ + volatile struct rt_memheap_item *next_ptr; /* lock memheap */ result = rt_sem_take(&(heap->lock), RT_WAITING_FOREVER); @@ -441,14 +443,14 @@ void *rt_memheap_realloc(struct rt_memheap *heap, void *ptr, rt_size_t newsize) next_ptr->prev = header_ptr; next_ptr->next = header_ptr->next; - header_ptr->next->prev = next_ptr; - header_ptr->next = next_ptr; + header_ptr->next->prev = (struct rt_memheap_item *)next_ptr; + header_ptr->next = (struct rt_memheap_item *)next_ptr; /* insert next_ptr to free list */ next_ptr->next_free = heap->free_list->next_free; next_ptr->prev_free = heap->free_list; - heap->free_list->next_free->prev_free = next_ptr; - heap->free_list->next_free = next_ptr; + heap->free_list->next_free->prev_free = (struct rt_memheap_item *)next_ptr; + heap->free_list->next_free = (struct rt_memheap_item *)next_ptr; RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new ptr: next_free 0x%08x, prev_free 0x%08x", next_ptr->next_free, next_ptr->prev_free)); @@ -666,17 +668,17 @@ void rt_memheap_free(void *ptr) RTM_EXPORT(rt_memheap_free); #ifdef RT_USING_FINSH -static void _memheap_dump_tag(struct rt_memheap_item* item) +static void _memheap_dump_tag(struct rt_memheap_item *item) { - rt_uint8_t name[2 * sizeof(void*)]; - rt_uint8_t* ptr; + rt_uint8_t name[2 * sizeof(void *)]; + rt_uint8_t *ptr; - ptr = (rt_uint8_t*)&(item->next_free); - rt_memcpy(name, ptr, sizeof(void*)); - ptr = (rt_uint8_t*)&(item->prev_free); - rt_memcpy(&name[sizeof(void*)], ptr, sizeof(void*)); + ptr = (rt_uint8_t *) & (item->next_free); + rt_memcpy(name, ptr, sizeof(void *)); + ptr = (rt_uint8_t *) & (item->prev_free); + rt_memcpy(&name[sizeof(void *)], ptr, sizeof(void *)); - rt_kprintf("%.*s", 2 * sizeof(void*), name); + rt_kprintf("%.*s", 2 * sizeof(void *), name); } int rt_memheap_dump(struct rt_memheap *heap) @@ -686,15 +688,15 @@ int rt_memheap_dump(struct rt_memheap *heap) if (heap == RT_NULL) return 0; RT_ASSERT(rt_object_get_type(&heap->parent) == RT_Object_Class_MemHeap); - rt_kprintf("\n[%.*s] [0x%08x - 0x%08x]->\n", RT_NAME_MAX, heap->parent.name, - (rt_ubase_t)heap->start_addr, (rt_ubase_t)heap->start_addr + heap->pool_size); + rt_kprintf("\n[%.*s] [0x%08x - 0x%08x]->\n", RT_NAME_MAX, heap->parent.name, + (rt_ubase_t)heap->start_addr, (rt_ubase_t)heap->start_addr + heap->pool_size); rt_kprintf("------------------------------\n"); /* lock memheap */ rt_sem_take(&(heap->lock), RT_WAITING_FOREVER); item = heap->block_list; - end = (struct rt_memheap_item *) ((rt_uint8_t *)heap->start_addr + heap->pool_size - RT_MEMHEAP_SIZE); + end = (struct rt_memheap_item *)((rt_uint8_t *)heap->start_addr + heap->pool_size - RT_MEMHEAP_SIZE); /* for each memory block */ while ((rt_ubase_t)item < ((rt_ubase_t)end)) @@ -730,13 +732,13 @@ int memheaptrace(void) int index; extern int list_memheap(void); - heaps = (struct rt_memheap**)rt_malloc(sizeof(struct rt_memheap*) * count); + heaps = (struct rt_memheap **)rt_malloc(sizeof(struct rt_memheap *) * count); if (heaps == RT_NULL) return 0; list_memheap(); rt_kprintf("memheap header size: %d\n", RT_MEMHEAP_SIZE); - count = rt_object_get_pointers(RT_Object_Class_MemHeap, (rt_object_t*)heaps, count); + count = rt_object_get_pointers(RT_Object_Class_MemHeap, (rt_object_t *)heaps, count); for (index = 0; index < count; index++) { rt_memheap_dump(heaps[index]); @@ -966,15 +968,15 @@ void dump_used_memheap(struct rt_memheap *mh) { /* dump information */ rt_kprintf("[0x%08x - %d - %c%c%c%c] used\n", header_ptr, block_size, - header_ptr->owner_thread_name[0], header_ptr->owner_thread_name[1], - header_ptr->owner_thread_name[2], header_ptr->owner_thread_name[3]); + header_ptr->owner_thread_name[0], header_ptr->owner_thread_name[1], + header_ptr->owner_thread_name[2], header_ptr->owner_thread_name[3]); } else { /* dump information */ rt_kprintf("[0x%08x - %d - %c%c%c%c] free\n", header_ptr, block_size, - header_ptr->owner_thread_name[0], header_ptr->owner_thread_name[1], - header_ptr->owner_thread_name[2], header_ptr->owner_thread_name[3]); + header_ptr->owner_thread_name[0], header_ptr->owner_thread_name[1], + header_ptr->owner_thread_name[2], header_ptr->owner_thread_name[3]); } /* move to next used memory block */ |