| 1 | //===-- PThreadEvent.h ------------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // Created by Greg Clayton on 6/16/07. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLDB_TOOLS_DEBUGSERVER_SOURCE_PTHREADEVENT_H |
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| 14 | #define LLDB_TOOLS_DEBUGSERVER_SOURCE_PTHREADEVENT_H |
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| 15 | #include "PThreadCondition.h" |
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| 16 | #include "PThreadMutex.h" |
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| 17 | #include <cstdint> |
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| 18 | #include <ctime> |
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| 19 | |
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| 20 | class PThreadEvent { |
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| 21 | public: |
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| 22 | PThreadEvent(uint32_t bits = 0, uint32_t validBits = 0); |
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| 23 | ~PThreadEvent(); |
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| 24 | |
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| 25 | uint32_t NewEventBit(); |
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| 26 | void FreeEventBits(const uint32_t mask); |
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| 27 | |
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| 28 | void ReplaceEventBits(const uint32_t bits); |
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| 29 | uint32_t GetEventBits() const; |
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| 30 | void SetEvents(const uint32_t mask); |
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| 31 | void ResetEvents(const uint32_t mask); |
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| 32 | // Wait for events to be set or reset. These functions take an optional |
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| 33 | // timeout value. If timeout is NULL an infinite timeout will be used. |
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| 34 | uint32_t |
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| 35 | WaitForSetEvents(const uint32_t mask, |
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| 36 | const struct timespec *timeout_abstime = NULL) const; |
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| 37 | uint32_t |
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| 38 | WaitForEventsToReset(const uint32_t mask, |
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| 39 | const struct timespec *timeout_abstime = NULL) const; |
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| 40 | |
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| 41 | uint32_t GetResetAckMask() const { return m_reset_ack_mask; } |
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| 42 | uint32_t SetResetAckMask(uint32_t mask) { return m_reset_ack_mask = mask; } |
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| 43 | uint32_t WaitForResetAck(const uint32_t mask, |
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| 44 | const struct timespec *timeout_abstime = NULL) const; |
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| 45 | |
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| 46 | protected: |
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| 47 | // pthread condition and mutex variable to control access and allow |
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| 48 | // blocking between the main thread and the spotlight index thread. |
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| 49 | mutable PThreadMutex m_mutex; |
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| 50 | mutable PThreadCondition m_set_condition; |
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| 51 | mutable PThreadCondition m_reset_condition; |
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| 52 | uint32_t m_bits; |
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| 53 | uint32_t m_validBits; |
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| 54 | uint32_t m_reset_ack_mask; |
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| 55 | |
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| 56 | private: |
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| 57 | PThreadEvent(const PThreadEvent &) = delete; |
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| 58 | PThreadEvent &operator=(const PThreadEvent &rhs) = delete; |
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| 59 | }; |
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| 60 | |
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| 61 | #endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_PTHREADEVENT_H |
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| 62 | |
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