mirror of
https://github.com/ziglang/zig.git
synced 2025-12-13 01:33:09 +00:00
5b813f1a2a
Prior to this change we would assume the ABI for Apple targets to be GNU which could result in subtle errors in LLVM emitting calls to non-existent system libc provided functions such as `_sincosf` which is a GNU extension and as such is not provided by macOS for example. This would result in linker errors where the linker would not be able to find the said symbol in `libSystem.tbd`. With this change, we now correctly identify macOS (and other Apple platforms) as having ABI `unknown` which translates to unspecified in LLVM under-the-hood: ``` // main.ll target triple = "aarch64-unknown-macos-unknown" ``` Note however that we never suffix the target OS with target version such as `macos11` or `macos12` which means we fail to instruct LLVM of potential optimisations provided by the OS such as the availability of function `___sincosf_stret`. I suggest we investigate that in a follow-up commit.
279 lines
8.2 KiB
C
Vendored
279 lines
8.2 KiB
C
Vendored
/*
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* Copyright (c) 2008-2013 Apple Inc. All rights reserved.
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*
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* @APPLE_APACHE_LICENSE_HEADER_START@
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @APPLE_APACHE_LICENSE_HEADER_END@
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*/
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#ifndef __DISPATCH_GROUP__
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#define __DISPATCH_GROUP__
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#ifndef __DISPATCH_INDIRECT__
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#error "Please #include <dispatch/dispatch.h> instead of this file directly."
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#include <dispatch/base.h> // for HeaderDoc
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#endif
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DISPATCH_ASSUME_NONNULL_BEGIN
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/*!
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* @typedef dispatch_group_t
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* @abstract
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* A group of blocks submitted to queues for asynchronous invocation.
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*/
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DISPATCH_DECL(dispatch_group);
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__BEGIN_DECLS
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/*!
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* @function dispatch_group_create
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*
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* @abstract
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* Creates new group with which blocks may be associated.
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*
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* @discussion
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* This function creates a new group with which blocks may be associated.
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* The dispatch group may be used to wait for the completion of the blocks it
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* references. The group object memory is freed with dispatch_release().
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*
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* @result
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* The newly created group, or NULL on failure.
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_MALLOC DISPATCH_RETURNS_RETAINED DISPATCH_WARN_RESULT
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DISPATCH_NOTHROW
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dispatch_group_t
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dispatch_group_create(void);
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/*!
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* @function dispatch_group_async
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*
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* @abstract
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* Submits a block to a dispatch queue and associates the block with the given
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* dispatch group.
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*
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* @discussion
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* Submits a block to a dispatch queue and associates the block with the given
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* dispatch group. The dispatch group may be used to wait for the completion
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* of the blocks it references.
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*
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* @param group
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* A dispatch group to associate with the submitted block.
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* The result of passing NULL in this parameter is undefined.
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*
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* @param queue
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* The dispatch queue to which the block will be submitted for asynchronous
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* invocation.
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*
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* @param block
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* The block to perform asynchronously.
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*/
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#ifdef __BLOCKS__
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
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void
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dispatch_group_async(dispatch_group_t group,
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dispatch_queue_t queue,
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dispatch_block_t block);
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#endif /* __BLOCKS__ */
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/*!
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* @function dispatch_group_async_f
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*
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* @abstract
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* Submits a function to a dispatch queue and associates the block with the
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* given dispatch group.
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*
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* @discussion
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* See dispatch_group_async() for details.
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*
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* @param group
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* A dispatch group to associate with the submitted function.
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* The result of passing NULL in this parameter is undefined.
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*
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* @param queue
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* The dispatch queue to which the function will be submitted for asynchronous
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* invocation.
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*
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* @param context
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* The application-defined context parameter to pass to the function.
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*
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* @param work
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* The application-defined function to invoke on the target queue. The first
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* parameter passed to this function is the context provided to
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* dispatch_group_async_f().
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL1 DISPATCH_NONNULL2 DISPATCH_NONNULL4
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DISPATCH_NOTHROW
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void
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dispatch_group_async_f(dispatch_group_t group,
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dispatch_queue_t queue,
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void *_Nullable context,
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dispatch_function_t work);
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/*!
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* @function dispatch_group_wait
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*
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* @abstract
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* Wait synchronously until all the blocks associated with a group have
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* completed or until the specified timeout has elapsed.
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*
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* @discussion
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* This function waits for the completion of the blocks associated with the
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* given dispatch group, and returns after all blocks have completed or when
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* the specified timeout has elapsed.
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*
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* This function will return immediately if there are no blocks associated
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* with the dispatch group (i.e. the group is empty).
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*
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* The result of calling this function from multiple threads simultaneously
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* with the same dispatch group is undefined.
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*
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* After the successful return of this function, the dispatch group is empty.
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* It may either be released with dispatch_release() or re-used for additional
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* blocks. See dispatch_group_async() for more information.
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*
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* @param group
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* The dispatch group to wait on.
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* The result of passing NULL in this parameter is undefined.
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*
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* @param timeout
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* When to timeout (see dispatch_time). As a convenience, there are the
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* DISPATCH_TIME_NOW and DISPATCH_TIME_FOREVER constants.
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*
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* @result
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* Returns zero on success (all blocks associated with the group completed
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* within the specified timeout) or non-zero on error (i.e. timed out).
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
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long
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dispatch_group_wait(dispatch_group_t group, dispatch_time_t timeout);
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/*!
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* @function dispatch_group_notify
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*
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* @abstract
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* Schedule a block to be submitted to a queue when all the blocks associated
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* with a group have completed.
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*
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* @discussion
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* This function schedules a notification block to be submitted to the specified
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* queue once all blocks associated with the dispatch group have completed.
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*
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* If no blocks are associated with the dispatch group (i.e. the group is empty)
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* then the notification block will be submitted immediately.
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*
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* The group will be empty at the time the notification block is submitted to
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* the target queue. The group may either be released with dispatch_release()
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* or reused for additional operations.
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* See dispatch_group_async() for more information.
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*
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* @param group
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* The dispatch group to observe.
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* The result of passing NULL in this parameter is undefined.
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*
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* @param queue
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* The queue to which the supplied block will be submitted when the group
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* completes.
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*
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* @param block
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* The block to submit when the group completes.
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*/
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#ifdef __BLOCKS__
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
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void
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dispatch_group_notify(dispatch_group_t group,
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dispatch_queue_t queue,
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dispatch_block_t block);
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#endif /* __BLOCKS__ */
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/*!
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* @function dispatch_group_notify_f
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*
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* @abstract
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* Schedule a function to be submitted to a queue when all the blocks
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* associated with a group have completed.
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*
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* @discussion
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* See dispatch_group_notify() for details.
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*
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* @param group
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* The dispatch group to observe.
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* The result of passing NULL in this parameter is undefined.
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*
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* @param context
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* The application-defined context parameter to pass to the function.
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*
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* @param work
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* The application-defined function to invoke on the target queue. The first
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* parameter passed to this function is the context provided to
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* dispatch_group_notify_f().
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL1 DISPATCH_NONNULL2 DISPATCH_NONNULL4
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DISPATCH_NOTHROW
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void
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dispatch_group_notify_f(dispatch_group_t group,
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dispatch_queue_t queue,
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void *_Nullable context,
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dispatch_function_t work);
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/*!
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* @function dispatch_group_enter
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*
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* @abstract
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* Manually indicate a block has entered the group
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*
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* @discussion
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* Calling this function indicates another block has joined the group through
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* a means other than dispatch_group_async(). Calls to this function must be
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* balanced with dispatch_group_leave().
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*
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* @param group
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* The dispatch group to update.
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* The result of passing NULL in this parameter is undefined.
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
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void
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dispatch_group_enter(dispatch_group_t group);
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/*!
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* @function dispatch_group_leave
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*
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* @abstract
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* Manually indicate a block in the group has completed
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*
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* @discussion
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* Calling this function indicates block has completed and left the dispatch
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* group by a means other than dispatch_group_async().
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*
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* @param group
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* The dispatch group to update.
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* The result of passing NULL in this parameter is undefined.
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*/
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API_AVAILABLE(macos(10.6), ios(4.0))
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DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
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void
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dispatch_group_leave(dispatch_group_t group);
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__END_DECLS
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DISPATCH_ASSUME_NONNULL_END
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#endif |