QATAPP-26069:Use attribute destructor instead of atexit for exitFunc

Change-Id: Id04161da743c1eda15f86a1c287aaf810c7891f5 Signed-off-by: Chengfei Zhu <chengfei.zhu@intel.com>
intel · Apr 28, 2022 · ba2eae6 · ba2eae6
1 parent 14d9bf3
commit ba2eae6
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diff --git a/README.md b/README.md
@@ -332,7 +332,7 @@ Known issues relating to the QATzip are described in this section.
 | Reference   | QATAPP-26069 |
 | Description | If the users call qzFree after qzMemDestory, they may encounter free memory error "free(): invalid pointe" |
 | Implication | User use qzMalloc API to allocte continuous memory |
-| Resolution | Ensure qzFree is invoked before qzMemDestory |
+| Resolution | Ensure qzMemDestory is invoked after qzFree, now we use attribute destructor to invoke qzMemDestory|
 | Affected OS | Linux |
 
 ## Intended Audience

diff --git a/src/qatzip.c b/src/qatzip.c
@@ -418,6 +418,8 @@ static void stopQat(void)
     g_process.qat_available = QZ_NONE;
 }
 
+static void exitFunc(void) __attribute__((destructor));
+
 static void exitFunc(void)
 {
     int i = 0;
@@ -670,12 +672,6 @@ int qzInit(QzSession_T *sess, unsigned char sw_backup)
     clearDevices(qat_hw);
     free(qat_hw);
 
-    rc = atexit(exitFunc);
-    if (unlikely(QZ_OK != rc)) {
-        QZ_ERROR("Error in register exit hander rc = %d\n", rc);
-        BACKOUT(QZ_NOSW_NO_HW);
-    }
-
     rc = g_process.qz_init_status = QZ_OK;
 
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