diff mbox series

[v6,1/3] eal: add basic thread ID and current thread identifier API

Message ID 1652361270-27116-2-git-send-email-roretzla@linux.microsoft.com (mailing list archive)
State New
Delegated to: David Marchand
Headers show
Series add eal functions for thread affinity and self | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Tyler Retzlaff May 12, 2022, 1:14 p.m. UTC
Provide a portable type-safe thread identifier.
Provide rte_thread_self for obtaining current thread identifier.

Signed-off-by: Narcisa Vasile <navasile@microsoft.com>
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
---
 lib/eal/include/rte_thread.h | 22 ++++++++++++++++++++++
 lib/eal/unix/rte_thread.c    | 13 +++++++++++++
 lib/eal/version.map          |  3 +++
 lib/eal/windows/rte_thread.c | 10 ++++++++++
 4 files changed, 48 insertions(+)

Comments

Konstantin Ananyev May 15, 2022, 10:02 p.m. UTC | #1
12/05/2022 14:14, Tyler Retzlaff пишет:
> Provide a portable type-safe thread identifier.
> Provide rte_thread_self for obtaining current thread identifier.
> 
> Signed-off-by: Narcisa Vasile <navasile@microsoft.com>
> Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> ---
>   lib/eal/include/rte_thread.h | 22 ++++++++++++++++++++++
>   lib/eal/unix/rte_thread.c    | 13 +++++++++++++
>   lib/eal/version.map          |  3 +++
>   lib/eal/windows/rte_thread.c | 10 ++++++++++
>   4 files changed, 48 insertions(+)
> 
> diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
> index 8be8ed8..14478ba 100644
> --- a/lib/eal/include/rte_thread.h
> +++ b/lib/eal/include/rte_thread.h
> @@ -1,7 +1,10 @@
>   /* SPDX-License-Identifier: BSD-3-Clause
>    * Copyright(c) 2021 Mellanox Technologies, Ltd
> + * Copyright (C) 2022 Microsoft Corporation
>    */
>   
> +#include <stdint.h>
> +
>   #include <rte_os.h>
>   #include <rte_compat.h>
>   
> @@ -21,10 +24,29 @@
>   #endif
>   
>   /**
> + * Thread id descriptor.
> + */
> +typedef struct {
> +	uintptr_t opaque_id; /**< thread identifier */
> +} rte_thread_t;
> +
> +/**
>    * TLS key type, an opaque pointer.
>    */
>   typedef struct eal_tls_key *rte_thread_key;
>   
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Get the id of the calling thread.
> + *
> + * @return
> + *   Return the thread id of the calling thread.
> + */
> +__rte_experimental
> +rte_thread_t rte_thread_self(void);
> +
>   #ifdef RTE_HAS_CPUSET
>   
>   /**
> diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c
> index c34ede9..5e5beb1 100644
> --- a/lib/eal/unix/rte_thread.c
> +++ b/lib/eal/unix/rte_thread.c
> @@ -1,5 +1,6 @@
>   /* SPDX-License-Identifier: BSD-3-Clause
>    * Copyright 2021 Mellanox Technologies, Ltd
> + * Copyright (C) 2022 Microsoft Corporation
>    */
>   
>   #include <errno.h>
> @@ -15,6 +16,18 @@ struct eal_tls_key {
>   	pthread_key_t thread_index;
>   };
>   
> +rte_thread_t
> +rte_thread_self(void)
> +{
> +	RTE_BUILD_BUG_ON(sizeof(pthread_t) > sizeof(uintptr_t));

As a nit:
sizeof(pthread_t) > sizeof(thread_id.opaque_id)
seems a bit better/safer for me.

Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>


> +
> +	rte_thread_t thread_id;
> +
> +	thread_id.opaque_id = (uintptr_t)pthread_self();
> +
> +	return thread_id;
> +}
> +
>   int
>   rte_thread_key_create(rte_thread_key *key, void (*destructor)(void *))
>   {
> diff --git a/lib/eal/version.map b/lib/eal/version.map
> index b53eeb3..05ce8f9 100644
> --- a/lib/eal/version.map
> +++ b/lib/eal/version.map
> @@ -420,6 +420,9 @@ EXPERIMENTAL {
>   	rte_intr_instance_free;
>   	rte_intr_type_get;
>   	rte_intr_type_set;
> +
> +	# added in 22.07
> +	rte_thread_self;
>   };
>   
>   INTERNAL {
> diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
> index 667287c..59fed3c 100644
> --- a/lib/eal/windows/rte_thread.c
> +++ b/lib/eal/windows/rte_thread.c
> @@ -11,6 +11,16 @@ struct eal_tls_key {
>   	DWORD thread_index;
>   };
>   
> +rte_thread_t
> +rte_thread_self(void)
> +{
> +	rte_thread_t thread_id;
> +
> +	thread_id.opaque_id = GetCurrentThreadId();
> +
> +	return thread_id;
> +}
> +
>   int
>   rte_thread_key_create(rte_thread_key *key,
>   		__rte_unused void (*destructor)(void *))
Tyler Retzlaff May 16, 2022, 6:21 a.m. UTC | #2
On Sun, May 15, 2022 at 11:02:30PM +0100, Konstantin Ananyev wrote:
> 12/05/2022 14:14, Tyler Retzlaff пишет:
> >Provide a portable type-safe thread identifier.
> >Provide rte_thread_self for obtaining current thread identifier.
> >
> >Signed-off-by: Narcisa Vasile <navasile@microsoft.com>
> >Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> >Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> >---
> >  lib/eal/include/rte_thread.h | 22 ++++++++++++++++++++++
> >  lib/eal/unix/rte_thread.c    | 13 +++++++++++++
> >  lib/eal/version.map          |  3 +++
> >  lib/eal/windows/rte_thread.c | 10 ++++++++++
> >  4 files changed, 48 insertions(+)
> >
> >diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
> >index 8be8ed8..14478ba 100644
> >--- a/lib/eal/include/rte_thread.h
> >+++ b/lib/eal/include/rte_thread.h
> >@@ -1,7 +1,10 @@
> >  /* SPDX-License-Identifier: BSD-3-Clause
> >   * Copyright(c) 2021 Mellanox Technologies, Ltd
> >+ * Copyright (C) 2022 Microsoft Corporation
> >   */
> >+#include <stdint.h>
> >+
> >  #include <rte_os.h>
> >  #include <rte_compat.h>
> >@@ -21,10 +24,29 @@
> >  #endif
> >  /**
> >+ * Thread id descriptor.
> >+ */
> >+typedef struct {
> >+	uintptr_t opaque_id; /**< thread identifier */
> >+} rte_thread_t;
> >+
> >+/**
> >   * TLS key type, an opaque pointer.
> >   */
> >  typedef struct eal_tls_key *rte_thread_key;
> >+/**
> >+ * @warning
> >+ * @b EXPERIMENTAL: this API may change without prior notice.
> >+ *
> >+ * Get the id of the calling thread.
> >+ *
> >+ * @return
> >+ *   Return the thread id of the calling thread.
> >+ */
> >+__rte_experimental
> >+rte_thread_t rte_thread_self(void);
> >+
> >  #ifdef RTE_HAS_CPUSET
> >  /**
> >diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c
> >index c34ede9..5e5beb1 100644
> >--- a/lib/eal/unix/rte_thread.c
> >+++ b/lib/eal/unix/rte_thread.c
> >@@ -1,5 +1,6 @@
> >  /* SPDX-License-Identifier: BSD-3-Clause
> >   * Copyright 2021 Mellanox Technologies, Ltd
> >+ * Copyright (C) 2022 Microsoft Corporation
> >   */
> >  #include <errno.h>
> >@@ -15,6 +16,18 @@ struct eal_tls_key {
> >  	pthread_key_t thread_index;
> >  };
> >+rte_thread_t
> >+rte_thread_self(void)
> >+{
> >+	RTE_BUILD_BUG_ON(sizeof(pthread_t) > sizeof(uintptr_t));
> 
> As a nit:
> sizeof(pthread_t) > sizeof(thread_id.opaque_id)
> seems a bit better/safer for me.
> 
> Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>

i won't change it for now, but i'll keep it in mind for when i'm
touching this file in subsequent series submissions.

thanks

> 
> 
> >+
> >+	rte_thread_t thread_id;
> >+
> >+	thread_id.opaque_id = (uintptr_t)pthread_self();
> >+
> >+	return thread_id;
> >+}
> >+
> >  int
> >  rte_thread_key_create(rte_thread_key *key, void (*destructor)(void *))
> >  {
> >diff --git a/lib/eal/version.map b/lib/eal/version.map
> >index b53eeb3..05ce8f9 100644
> >--- a/lib/eal/version.map
> >+++ b/lib/eal/version.map
> >@@ -420,6 +420,9 @@ EXPERIMENTAL {
> >  	rte_intr_instance_free;
> >  	rte_intr_type_get;
> >  	rte_intr_type_set;
> >+
> >+	# added in 22.07
> >+	rte_thread_self;
> >  };
> >  INTERNAL {
> >diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
> >index 667287c..59fed3c 100644
> >--- a/lib/eal/windows/rte_thread.c
> >+++ b/lib/eal/windows/rte_thread.c
> >@@ -11,6 +11,16 @@ struct eal_tls_key {
> >  	DWORD thread_index;
> >  };
> >+rte_thread_t
> >+rte_thread_self(void)
> >+{
> >+	rte_thread_t thread_id;
> >+
> >+	thread_id.opaque_id = GetCurrentThreadId();
> >+
> >+	return thread_id;
> >+}
> >+
> >  int
> >  rte_thread_key_create(rte_thread_key *key,
> >  		__rte_unused void (*destructor)(void *))
diff mbox series

Patch

diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
index 8be8ed8..14478ba 100644
--- a/lib/eal/include/rte_thread.h
+++ b/lib/eal/include/rte_thread.h
@@ -1,7 +1,10 @@ 
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2021 Mellanox Technologies, Ltd
+ * Copyright (C) 2022 Microsoft Corporation
  */
 
+#include <stdint.h>
+
 #include <rte_os.h>
 #include <rte_compat.h>
 
@@ -21,10 +24,29 @@ 
 #endif
 
 /**
+ * Thread id descriptor.
+ */
+typedef struct {
+	uintptr_t opaque_id; /**< thread identifier */
+} rte_thread_t;
+
+/**
  * TLS key type, an opaque pointer.
  */
 typedef struct eal_tls_key *rte_thread_key;
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Get the id of the calling thread.
+ *
+ * @return
+ *   Return the thread id of the calling thread.
+ */
+__rte_experimental
+rte_thread_t rte_thread_self(void);
+
 #ifdef RTE_HAS_CPUSET
 
 /**
diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c
index c34ede9..5e5beb1 100644
--- a/lib/eal/unix/rte_thread.c
+++ b/lib/eal/unix/rte_thread.c
@@ -1,5 +1,6 @@ 
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright 2021 Mellanox Technologies, Ltd
+ * Copyright (C) 2022 Microsoft Corporation
  */
 
 #include <errno.h>
@@ -15,6 +16,18 @@  struct eal_tls_key {
 	pthread_key_t thread_index;
 };
 
+rte_thread_t
+rte_thread_self(void)
+{
+	RTE_BUILD_BUG_ON(sizeof(pthread_t) > sizeof(uintptr_t));
+
+	rte_thread_t thread_id;
+
+	thread_id.opaque_id = (uintptr_t)pthread_self();
+
+	return thread_id;
+}
+
 int
 rte_thread_key_create(rte_thread_key *key, void (*destructor)(void *))
 {
diff --git a/lib/eal/version.map b/lib/eal/version.map
index b53eeb3..05ce8f9 100644
--- a/lib/eal/version.map
+++ b/lib/eal/version.map
@@ -420,6 +420,9 @@  EXPERIMENTAL {
 	rte_intr_instance_free;
 	rte_intr_type_get;
 	rte_intr_type_set;
+
+	# added in 22.07
+	rte_thread_self;
 };
 
 INTERNAL {
diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
index 667287c..59fed3c 100644
--- a/lib/eal/windows/rte_thread.c
+++ b/lib/eal/windows/rte_thread.c
@@ -11,6 +11,16 @@  struct eal_tls_key {
 	DWORD thread_index;
 };
 
+rte_thread_t
+rte_thread_self(void)
+{
+	rte_thread_t thread_id;
+
+	thread_id.opaque_id = GetCurrentThreadId();
+
+	return thread_id;
+}
+
 int
 rte_thread_key_create(rte_thread_key *key,
 		__rte_unused void (*destructor)(void *))