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Issue 2143443002: [Atomics] Rename Atomics.futex*, remove Atomics.futexWakeOrRequeue (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: merge master Created 4 years, 5 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved. 1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/runtime/runtime-utils.h" 5 #include "src/runtime/runtime-utils.h"
6 6
7 #include "src/arguments.h" 7 #include "src/arguments.h"
8 #include "src/base/platform/time.h" 8 #include "src/base/platform/time.h"
9 #include "src/conversions-inl.h" 9 #include "src/conversions-inl.h"
10 #include "src/futex-emulation.h" 10 #include "src/futex-emulation.h"
11 #include "src/globals.h" 11 #include "src/globals.h"
12 12
13 // Implement Futex API for SharedArrayBuffers as defined in the 13 // Implement Futex API for SharedArrayBuffers as defined in the
14 // SharedArrayBuffer draft spec, found here: 14 // SharedArrayBuffer draft spec, found here:
15 // https://github.com/lars-t-hansen/ecmascript_sharedmem 15 // https://github.com/tc39/ecmascript_sharedmem
16 16
17 namespace v8 { 17 namespace v8 {
18 namespace internal { 18 namespace internal {
19 19
20 RUNTIME_FUNCTION(Runtime_AtomicsFutexWait) { 20 RUNTIME_FUNCTION(Runtime_AtomicsWait) {
21 HandleScope scope(isolate); 21 HandleScope scope(isolate);
22 DCHECK(args.length() == 4); 22 DCHECK(args.length() == 4);
23 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); 23 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
24 CONVERT_SIZE_ARG_CHECKED(index, 1); 24 CONVERT_SIZE_ARG_CHECKED(index, 1);
25 CONVERT_INT32_ARG_CHECKED(value, 2); 25 CONVERT_INT32_ARG_CHECKED(value, 2);
26 CONVERT_DOUBLE_ARG_CHECKED(timeout, 3); 26 CONVERT_DOUBLE_ARG_CHECKED(timeout, 3);
27 CHECK(sta->GetBuffer()->is_shared()); 27 CHECK(sta->GetBuffer()->is_shared());
28 CHECK_LT(index, NumberToSize(isolate, sta->length())); 28 CHECK_LT(index, NumberToSize(isolate, sta->length()));
29 CHECK_EQ(sta->type(), kExternalInt32Array); 29 CHECK_EQ(sta->type(), kExternalInt32Array);
30 CHECK(timeout == V8_INFINITY || !std::isnan(timeout)); 30 CHECK(timeout == V8_INFINITY || !std::isnan(timeout));
31 31
32 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer(); 32 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer();
33 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset()); 33 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset());
34 34
35 return FutexEmulation::Wait(isolate, array_buffer, addr, value, timeout); 35 return FutexEmulation::Wait(isolate, array_buffer, addr, value, timeout);
36 } 36 }
37 37
38 38 RUNTIME_FUNCTION(Runtime_AtomicsWake) {
39 RUNTIME_FUNCTION(Runtime_AtomicsFutexWake) {
40 HandleScope scope(isolate); 39 HandleScope scope(isolate);
41 DCHECK(args.length() == 3); 40 DCHECK(args.length() == 3);
42 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); 41 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
43 CONVERT_SIZE_ARG_CHECKED(index, 1); 42 CONVERT_SIZE_ARG_CHECKED(index, 1);
44 CONVERT_INT32_ARG_CHECKED(count, 2); 43 CONVERT_INT32_ARG_CHECKED(count, 2);
45 CHECK(sta->GetBuffer()->is_shared()); 44 CHECK(sta->GetBuffer()->is_shared());
46 CHECK_LT(index, NumberToSize(isolate, sta->length())); 45 CHECK_LT(index, NumberToSize(isolate, sta->length()));
47 CHECK_EQ(sta->type(), kExternalInt32Array); 46 CHECK_EQ(sta->type(), kExternalInt32Array);
48 47
49 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer(); 48 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer();
50 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset()); 49 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset());
51 50
52 return FutexEmulation::Wake(isolate, array_buffer, addr, count); 51 return FutexEmulation::Wake(isolate, array_buffer, addr, count);
53 } 52 }
54 53
55 54 RUNTIME_FUNCTION(Runtime_AtomicsNumWaitersForTesting) {
56 RUNTIME_FUNCTION(Runtime_AtomicsFutexWakeOrRequeue) {
57 HandleScope scope(isolate);
58 DCHECK(args.length() == 5);
59 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
60 CONVERT_SIZE_ARG_CHECKED(index1, 1);
61 CONVERT_INT32_ARG_CHECKED(count, 2);
62 CONVERT_INT32_ARG_CHECKED(value, 3);
63 CONVERT_SIZE_ARG_CHECKED(index2, 4);
64 CHECK(sta->GetBuffer()->is_shared());
65 CHECK_LT(index1, NumberToSize(isolate, sta->length()));
66 CHECK_LT(index2, NumberToSize(isolate, sta->length()));
67 CHECK_EQ(sta->type(), kExternalInt32Array);
68
69 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer();
70 size_t addr1 = (index1 << 2) + NumberToSize(isolate, sta->byte_offset());
71 size_t addr2 = (index2 << 2) + NumberToSize(isolate, sta->byte_offset());
72
73 return FutexEmulation::WakeOrRequeue(isolate, array_buffer, addr1, count,
74 value, addr2);
75 }
76
77
78 RUNTIME_FUNCTION(Runtime_AtomicsFutexNumWaitersForTesting) {
79 HandleScope scope(isolate); 55 HandleScope scope(isolate);
80 DCHECK(args.length() == 2); 56 DCHECK(args.length() == 2);
81 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); 57 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
82 CONVERT_SIZE_ARG_CHECKED(index, 1); 58 CONVERT_SIZE_ARG_CHECKED(index, 1);
83 CHECK(sta->GetBuffer()->is_shared()); 59 CHECK(sta->GetBuffer()->is_shared());
84 CHECK_LT(index, NumberToSize(isolate, sta->length())); 60 CHECK_LT(index, NumberToSize(isolate, sta->length()));
85 CHECK_EQ(sta->type(), kExternalInt32Array); 61 CHECK_EQ(sta->type(), kExternalInt32Array);
86 62
87 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer(); 63 Handle<JSArrayBuffer> array_buffer = sta->GetBuffer();
88 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset()); 64 size_t addr = (index << 2) + NumberToSize(isolate, sta->byte_offset());
89 65
90 return FutexEmulation::NumWaitersForTesting(isolate, array_buffer, addr); 66 return FutexEmulation::NumWaitersForTesting(isolate, array_buffer, addr);
91 } 67 }
92 } // namespace internal 68 } // namespace internal
93 } // namespace v8 69 } // namespace v8
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