diff mbox series

[v10,3/9] eal/windows: translate Windows errors to errno-style errors

Message ID 1624051606-26779-4-git-send-email-navasile@linux.microsoft.com (mailing list archive)
State Superseded, archived
Delegated to: David Marchand
Headers
Series eal: Add EAL API for threading |

Checks

Context Check Description
ci/checkpatch warning coding style issues

Commit Message

Narcisa Ana Maria Vasile June 18, 2021, 9:26 p.m. UTC 
From: Narcisa Vasile <navasile@microsoft.com>

Add function to translate Windows error codes to
errno-style error codes. The possible return values are chosen
so that we have as much semantical compatibility between platforms as
possible.

Signed-off-by: Narcisa Vasile <navasile@microsoft.com>
---
 lib/eal/common/rte_thread.c  |  6 +--
 lib/eal/include/rte_thread.h |  5 +-
 lib/eal/windows/rte_thread.c | 95 +++++++++++++++++++++++++++---------
 3 files changed, 76 insertions(+), 30 deletions(-)
diff mbox series

Patch

diff --git a/lib/eal/common/rte_thread.c b/lib/eal/common/rte_thread.c
index e1a4d7eae4..27ad1c7eb0 100644
--- a/lib/eal/common/rte_thread.c
+++ b/lib/eal/common/rte_thread.c
@@ -47,7 +47,7 @@  rte_thread_attr_init(rte_thread_attr_t *attr)
 
 int
 rte_thread_attr_set_affinity(rte_thread_attr_t *thread_attr,
-			     rte_cpuset_t *cpuset)
+		rte_cpuset_t *cpuset)
 {
 	RTE_VERIFY(thread_attr != NULL);
 	RTE_VERIFY(cpuset != NULL);
@@ -59,7 +59,7 @@  rte_thread_attr_set_affinity(rte_thread_attr_t *thread_attr,
 
 int
 rte_thread_attr_get_affinity(rte_thread_attr_t *thread_attr,
-			     rte_cpuset_t *cpuset)
+		rte_cpuset_t *cpuset)
 {
 	RTE_VERIFY(thread_attr != NULL);
 	RTE_VERIFY(cpuset != NULL);
@@ -71,7 +71,7 @@  rte_thread_attr_get_affinity(rte_thread_attr_t *thread_attr,
 
 int
 rte_thread_attr_set_priority(rte_thread_attr_t *thread_attr,
-			     enum rte_thread_priority priority)
+		enum rte_thread_priority priority)
 {
 	RTE_VERIFY(thread_attr != NULL);
 
diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
index 032ff73b36..bf649c2fe6 100644
--- a/lib/eal/include/rte_thread.h
+++ b/lib/eal/include/rte_thread.h
@@ -235,9 +235,8 @@  int rte_thread_value_set(rte_thread_key key, const void *value);
  *
  * @return
  *   On success, value data pointer (can also be NULL).
- *   On failure, NULL and an error number is set in rte_errno.
- *   rte_errno can be: EINVAL  - Invalid parameter passed.
- *                     ENOEXEC - Specific OS error.
+ *   On failure, NULL and a positive error number is set in rte_errno.
+ *
  */
 __rte_experimental
 void *rte_thread_value_get(rte_thread_key key);
diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
index 01966e7745..c1ecfbd6ae 100644
--- a/lib/eal/windows/rte_thread.c
+++ b/lib/eal/windows/rte_thread.c
@@ -13,6 +13,54 @@  struct eal_tls_key {
 	DWORD thread_index;
 };
 
+/* Translates the most common error codes related to threads */
+static int
+thread_translate_win32_error(DWORD error)
+{
+	switch (error) {
+	case ERROR_SUCCESS:
+		return 0;
+
+	case ERROR_INVALID_PARAMETER:
+		return EINVAL;
+
+	case ERROR_INVALID_HANDLE:
+		return EFAULT;
+
+	case ERROR_NOT_ENOUGH_MEMORY:
+	/* FALLTHROUGH */
+	case ERROR_NO_SYSTEM_RESOURCES:
+		return ENOMEM;
+
+	case ERROR_PRIVILEGE_NOT_HELD:
+	/* FALLTHROUGH */
+	case ERROR_ACCESS_DENIED:
+		return EACCES;
+
+	case ERROR_ALREADY_EXISTS:
+		return EEXIST;
+
+	case ERROR_POSSIBLE_DEADLOCK:
+		return EDEADLK;
+
+	case ERROR_INVALID_FUNCTION:
+	/* FALLTHROUGH */
+	case ERROR_CALL_NOT_IMPLEMENTED:
+		return ENOSYS;
+	}
+
+	return EINVAL;
+}
+
+static int
+thread_log_last_error(const char *message)
+{
+	DWORD error = GetLastError();
+	RTE_LOG(DEBUG, EAL, "GetLastError()=%lu: %s\n", error, message);
+
+	return thread_translate_win32_error(error);
+}
+
 rte_thread_t
 rte_thread_self(void)
 {
@@ -42,7 +90,7 @@  rte_thread_attr_init(rte_thread_attr_t *attr)
 
 int
 rte_thread_attr_set_affinity(rte_thread_attr_t *thread_attr,
-			     rte_cpuset_t *cpuset)
+		rte_cpuset_t *cpuset)
 {
 	RTE_VERIFY(thread_attr != NULL);
 	thread_attr->cpuset = *cpuset;
@@ -52,7 +100,7 @@  rte_thread_attr_set_affinity(rte_thread_attr_t *thread_attr,
 
 int
 rte_thread_attr_get_affinity(rte_thread_attr_t *thread_attr,
-			     rte_cpuset_t *cpuset)
+		rte_cpuset_t *cpuset)
 {
 	RTE_VERIFY(thread_attr != NULL);
 
@@ -63,7 +111,7 @@  rte_thread_attr_get_affinity(rte_thread_attr_t *thread_attr,
 
 int
 rte_thread_attr_set_priority(rte_thread_attr_t *thread_attr,
-			     enum rte_thread_priority priority)
+		enum rte_thread_priority priority)
 {
 	RTE_VERIFY(thread_attr != NULL);
 
@@ -76,18 +124,18 @@  int
 rte_thread_key_create(rte_thread_key *key,
 		__rte_unused void (*destructor)(void *))
 {
+	int ret;
+
 	*key = malloc(sizeof(**key));
 	if ((*key) == NULL) {
 		RTE_LOG(DEBUG, EAL, "Cannot allocate TLS key.\n");
-		rte_errno = ENOMEM;
-		return -1;
+		return ENOMEM;
 	}
 	(*key)->thread_index = TlsAlloc();
 	if ((*key)->thread_index == TLS_OUT_OF_INDEXES) {
-		RTE_LOG_WIN32_ERR("TlsAlloc()");
+		ret = thread_log_last_error("TlsAlloc()");
 		free(*key);
-		rte_errno = ENOEXEC;
-		return -1;
+		return ret;
 	}
 	return 0;
 }
@@ -95,16 +143,16 @@  rte_thread_key_create(rte_thread_key *key,
 int
 rte_thread_key_delete(rte_thread_key key)
 {
-	if (!key) {
+	int ret;
+
+	if (key == NULL) {
 		RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
-		rte_errno = EINVAL;
-		return -1;
+		return EINVAL;
 	}
 	if (!TlsFree(key->thread_index)) {
-		RTE_LOG_WIN32_ERR("TlsFree()");
+		ret = thread_log_last_error("TlsFree()");
 		free(key);
-		rte_errno = ENOEXEC;
-		return -1;
+		return ret;
 	}
 	free(key);
 	return 0;
@@ -115,17 +163,14 @@  rte_thread_value_set(rte_thread_key key, const void *value)
 {
 	char *p;
 
-	if (!key) {
+	if (key == NULL) {
 		RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
-		rte_errno = EINVAL;
-		return -1;
+		return EINVAL;
 	}
 	/* discard const qualifier */
 	p = (char *) (uintptr_t) value;
 	if (!TlsSetValue(key->thread_index, p)) {
-		RTE_LOG_WIN32_ERR("TlsSetValue()");
-		rte_errno = ENOEXEC;
-		return -1;
+		return thread_log_last_error("TlsSetValue()");
 	}
 	return 0;
 }
@@ -134,16 +179,18 @@  void *
 rte_thread_value_get(rte_thread_key key)
 {
 	void *output;
+	DWORD ret = 0;
 
-	if (!key) {
+	if (key == NULL) {
 		RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
 		rte_errno = EINVAL;
 		return NULL;
 	}
 	output = TlsGetValue(key->thread_index);
-	if (GetLastError() != ERROR_SUCCESS) {
-		RTE_LOG_WIN32_ERR("TlsGetValue()");
-		rte_errno = ENOEXEC;
+	ret = GetLastError();
+	if (ret != 0) {
+		RTE_LOG(DEBUG, EAL, "GetLastError()=%lu: TlsGetValue()\n", ret);
+		rte_errno = thread_translate_win32_error(ret);
 		return NULL;
 	}
 	return output;