Squashed 'connectivity/nanostack/sal-stack-nanostack-eventloop/' content from commit fdb818f341

git-subtree-dir: connectivity/nanostack/sal-stack-nanostack-eventloop
git-subtree-split: fdb818f34127bc09819978cf1345b04ae8893d33

Author: Arto Kinnunen

.gitignore

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+*.a
+output/*
+build
+*.lib

LICENSE

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+Unless specifically indicated otherwise in a file, files are licensed
+under the Apache 2.0 license, as can be found in: apache-2.0.txt

Makefile

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+# Define compiler toolchain with CC or PLATFORM variables
+# Example (GCC toolchains)
+# make PLATFORM=arm-linux-gnueabi-
+# OR
+# make CC=armcc AR=ArmAR
+# OR
+# make CC=iccarm
+
+LIB = libeventOS.a
+SRCS += \
+		source/event.c \
+		source/ns_timer.c \
+		source/system_timer.c\
+		source/ns_timeout.c
+
+include ../libService/toolchain_rules.mk
+
+override CFLAGS += -I nanostack-event-loop
+
+#
+# External sources from libService
+#
+SERVLIB_DIR := ../libService
+override CFLAGS += -I$(SERVLIB_DIR)/libService
+
+$(eval $(call generate_rules,$(LIB),$(SRCS)))
+
+.PHONY: release
+release:
+	7z a edtls-lib_$(VERSION).zip *.a *.lib include
+
+.PHONY: deploy_to
+deploy_to: all
+	tar --transform 's,^,event-loop/,' --append -f $(TO) *.a

apache-2.0.txt

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+
+
+Apache License
+
+Version 2.0, January 2004
+
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
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+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
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+
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+
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+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
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+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
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+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS

mbed_lib.json

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+{
+    "name": "nanostack-eventloop",
+    "requires": ["nanostack-hal"],
+    "config": {
+        "use_platform_tick_timer": {
+            "help": "Use platform provided low resolution tick timer for eventloop",
+            "value": null
+        },
+        "exclude_highres_timer": {
+            "help": "Exclude high resolution timer from build",
+            "value": null
+        }
+    }
+}

nanostack-event-loop/eventOS_callback_timer.h

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+/*
+ * Copyright (c) 2014-2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef EVENTOS_CALLBACK_TIMER_H_
+#define EVENTOS_CALLBACK_TIMER_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include "ns_types.h"
+
+extern int8_t eventOS_callback_timer_register(void (*timer_interrupt_handler)(int8_t, uint16_t));
+extern int8_t eventOS_callback_timer_unregister(int8_t ns_timer_id);
+
+extern int8_t eventOS_callback_timer_stop(int8_t ns_timer_id);
+extern int8_t eventOS_callback_timer_start(int8_t ns_timer_id, uint16_t slots);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EVENTOS_CALLBACK_TIMER_H_ */

nanostack-event-loop/eventOS_event.h

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+/*
+ * Copyright (c) 2014-2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef EVENTOS_EVENT_H_
+#define EVENTOS_EVENT_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "ns_types.h"
+#include "ns_list.h"
+
+/**
+ * \enum arm_library_event_priority_e
+ * \brief Event Priority level.
+ */
+typedef enum arm_library_event_priority_e {
+    ARM_LIB_HIGH_PRIORITY_EVENT = 0, /**< High Priority Event (Function CB) */
+    ARM_LIB_MED_PRIORITY_EVENT = 1, /**< Medium Priority (Timer) */
+    ARM_LIB_LOW_PRIORITY_EVENT = 2, /*!*< Normal Event and ECC / Security */
+} arm_library_event_priority_e;
+
+/**
+ * \struct arm_event_s
+ * \brief Event structure.
+ */
+typedef struct arm_event_s {
+    int8_t receiver; /**< Event handler Tasklet ID */
+    int8_t sender; /**< Event sender Tasklet ID */
+    uint8_t event_type; /**< This will be typecast arm_library_event_type_e, arm_internal_event_type_e or application specific define */
+    uint8_t event_id; /**< Timer ID, NWK interface ID or application specific ID */
+    void *data_ptr; /**< Application could share data pointer tasklet to tasklet */
+    arm_library_event_priority_e priority;
+    uintptr_t event_data;
+} arm_event_t;
+
+/* Backwards compatibility */
+typedef arm_event_t arm_event_s;
+
+/**
+ * \struct arm_event_storage
+ * \brief Event structure storage, including list link.
+
+@startuml
+
+partition "Event loop" {
+(*) -->[event created] "UNQUEUED"
+"UNQUEUED" -->[event_core_write()] "QUEUED"
+"QUEUED" -->[event_core_read()] "RUNNING"
+"RUNNING" ->[event_core_free_push()] "UNQUEUED"
+}
+
+partition "system_timer.c" {
+    "UNQUEUED:timer" -->[eventOS_event_send_timer_allocated()] "QUEUED"
+}
+@enduml
+
+ */
+typedef struct arm_event_storage {
+    arm_event_s data;
+    enum {
+        ARM_LIB_EVENT_STARTUP_POOL,
+        ARM_LIB_EVENT_DYNAMIC,
+        ARM_LIB_EVENT_USER,
+        ARM_LIB_EVENT_TIMER,
+    } allocator;
+    enum {
+        ARM_LIB_EVENT_UNQUEUED,
+        ARM_LIB_EVENT_QUEUED,
+        ARM_LIB_EVENT_RUNNING,
+    } state;
+    ns_list_link_t link;
+} arm_event_storage_t;
+
+/**
+ * \brief Send event to event scheduler.
+ *
+ * \param event pointer to pushed event.
+ *
+ * Event data is copied by the call, and this copy persists until the
+ * recipient's callback function returns. The callback function is passed
+ * a pointer to a copy of the data, not the original pointer.
+ *
+ * \return 0 Event push OK
+ * \return -1 Memory allocation Fail
+ */
+extern int8_t eventOS_event_send(const arm_event_t *event);
+
+/* Alternate names for timer function from eventOS_event_timer.h;
+ * implementations may one day merge */
+#define eventOS_event_send_at(event, at)       eventOS_event_timer_request_at(event, at)
+#define eventOS_event_send_in(event, in)       eventOS_event_timer_request_in(event, in)
+#define eventOS_event_send_after(event, after) eventOS_event_timer_request_after(event, after)
+#define eventOS_event_send_every(event, every) eventOS_event_timer_request_every(event, every)
+
+/**
+ * \brief Send user-allocated event to event scheduler.
+ *
+ * \param event pointer to pushed event storage.
+ *
+ * The event structure is not copied by the call, the event system takes
+ * ownership and it is threaded directly into the event queue. This avoids the
+ * possibility of event sending failing due to memory exhaustion.
+ *
+ * event->data must be filled in on entry - the rest of the structure (link and
+ * allocator) need not be.
+ *
+ * The structure must remain valid until the recipient is called - the
+ * event system passes ownership to the receiving event handler, who may then
+ * invalidate it, or send it again.
+ *
+ * The recipient receives a pointer to the arm_event_t data member of the
+ * event - it can use NS_CONTAINER_OF() to get a pointer to the original
+ * event passed to this call, or to its outer container.
+ *
+ * It is a program error to send a user-allocated event to a non-existent task.
+ */
+extern void eventOS_event_send_user_allocated(arm_event_storage_t *event);
+
+/**
+ * \brief Event handler callback register
+ *
+ * Function will register and allocate unique event id handler
+ *
+ * \param handler_func_ptr function pointer for event handler
+ * \param init_event_type generated event type for init purpose
+ *
+ * \return >= 0 Unique event ID for this handler
+ * \return < 0 Register fail
+ *
+ * */
+extern int8_t eventOS_event_handler_create(void (*handler_func_ptr)(arm_event_t *), uint8_t init_event_type);
+
+/**
+ * Cancel an event.
+ *
+ * Queued events are removed from the event-loop queue and/or the timer queue.
+ *
+ * Passing a NULL pointer is allowed, and does nothing.
+ *
+ * Event pointers are valid from the time they are queued until the event
+ * has finished running or is cancelled.
+ *
+ * Cancelling a currently-running event is only useful to stop scheduling
+ * it if it is on a periodic timer; it has no other effect.
+ *
+ * Cancelling an already-cancelled or already-run single-shot event
+ * is undefined behaviour.
+ *
+ * \param event Pointer to event handle or NULL.
+ */
+extern void eventOS_cancel(arm_event_storage_t *event);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* EVENTOS_EVENT_H_ */