From: Narcisa Vasile <navas...@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.
---
lib/eal/include/rte_thread.h | 5 +-
lib/eal/windows/rte_thread.c | 90 +++++++++++++++++++++++++++---------
2 files changed, 71 insertions(+), 24 deletions(-)
diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
index eff00023d7..f3eeb28753 100644
--- a/lib/eal/include/rte_thread.h
+++ b/lib/eal/include/rte_thread.h
@@ -236,9 +236,8 @@ 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 cc319d3628..6ea1dc2a05 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)
{
@@ -85,18 +133,18 @@ 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;
}
@@ -104,16 +152,16 @@ 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;
@@ -122,19 +170,17 @@ rte_thread_key_delete(rte_thread_key key)
int
rte_thread_value_set(rte_thread_key key, const void *value)
{
+ int ret;
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;
}
@@ -143,16 +189,18 @@ 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;
--
2.31.0.vfs.0.1
