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Side by Side Diff: platforms/stm/disco_dartino/src/circular_buffer.cc

Issue 1659163007: Rename fletch -> dartino (Closed) Base URL: https://github.com/dartino/sdk.git@master
Patch Set: address comments Created 4 years, 10 months ago
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1 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file 1 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE.md file. 3 // BSD-style license that can be found in the LICENSE.md file.
4 4
5 #include "platforms/stm/disco_fletch/src/circular_buffer.h" 5 #include "platforms/stm/disco_dartino/src/circular_buffer.h"
6 6
7 #include <stdlib.h> 7 #include <stdlib.h>
8 #include <string.h> 8 #include <string.h>
9 9
10 CircularBuffer::CircularBuffer(size_t capacity) { 10 CircularBuffer::CircularBuffer(size_t capacity) {
11 monitor_ = fletch::Platform::CreateMonitor(); 11 monitor_ = dartino::Platform::CreateMonitor();
12 // One additional byte needed to distinguish between empty and full. 12 // One additional byte needed to distinguish between empty and full.
13 capacity_ = capacity + 1; 13 capacity_ = capacity + 1;
14 buffer_ = new uint8_t[capacity_]; 14 buffer_ = new uint8_t[capacity_];
15 head_ = tail_ = 0; 15 head_ = tail_ = 0;
16 } 16 }
17 17
18 CircularBuffer::~CircularBuffer() { 18 CircularBuffer::~CircularBuffer() {
19 delete[] buffer_; 19 delete[] buffer_;
20 } 20 }
21 21
22 bool CircularBuffer::IsEmpty() { 22 bool CircularBuffer::IsEmpty() {
23 fletch::ScopedMonitorLock locker(monitor_); 23 dartino::ScopedMonitorLock locker(monitor_);
24 return head_ == tail_; 24 return head_ == tail_;
25 } 25 }
26 26
27 bool CircularBuffer::IsFull() { 27 bool CircularBuffer::IsFull() {
28 fletch::ScopedMonitorLock locker(monitor_); 28 dartino::ScopedMonitorLock locker(monitor_);
29 return ((head_ + 1) % capacity_) == tail_; 29 return ((head_ + 1) % capacity_) == tail_;
30 } 30 }
31 31
32 size_t CircularBuffer::Read(uint8_t* data, size_t count, Blocking block) { 32 size_t CircularBuffer::Read(uint8_t* data, size_t count, Blocking block) {
33 fletch::ScopedMonitorLock locker(monitor_); 33 dartino::ScopedMonitorLock locker(monitor_);
34 34
35 // If buffer is empty wait for data. 35 // If buffer is empty wait for data.
36 if (block == kBlock) { 36 if (block == kBlock) {
37 if (head_ == tail_) { 37 if (head_ == tail_) {
38 monitor_->Wait(); 38 monitor_->Wait();
39 } 39 }
40 } 40 }
41 41
42 int bytes; 42 int bytes;
43 int read = 0; 43 int read = 0;
(...skipping 12 matching lines...) Expand all
56 tail_ = (tail_ + bytes) % capacity_; 56 tail_ = (tail_ + bytes) % capacity_;
57 } 57 }
58 58
59 monitor_->Notify(); 59 monitor_->Notify();
60 60
61 return read; 61 return read;
62 } 62 }
63 63
64 size_t CircularBuffer::Write( 64 size_t CircularBuffer::Write(
65 const uint8_t* data, size_t count, Blocking block) { 65 const uint8_t* data, size_t count, Blocking block) {
66 fletch::ScopedMonitorLock locker(monitor_); 66 dartino::ScopedMonitorLock locker(monitor_);
67 67
68 // If buffer is full wait for room. 68 // If buffer is full wait for room.
69 if (block == kBlock) { 69 if (block == kBlock) {
70 if (((head_ + 1) % capacity_) == tail_) { 70 if (((head_ + 1) % capacity_) == tail_) {
71 monitor_->Wait(); 71 monitor_->Wait();
72 } 72 }
73 } 73 }
74 74
75 int bytes; 75 int bytes;
76 int written = 0; 76 int written = 0;
(...skipping 10 matching lines...) Expand all
87 bytes = MIN(tail_ - head_ - 1, count - written); 87 bytes = MIN(tail_ - head_ - 1, count - written);
88 memcpy(buffer_ + head_, data + written, bytes); 88 memcpy(buffer_ + head_, data + written, bytes);
89 written += bytes; 89 written += bytes;
90 head_ = (head_ + bytes) % capacity_; 90 head_ = (head_ + bytes) % capacity_;
91 } 91 }
92 92
93 monitor_->Notify(); 93 monitor_->Notify();
94 94
95 return written; 95 return written;
96 } 96 }
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