1 // Copyright 2024 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include <cstring>
16
17 #include "pw_assert_trap/config.h"
18 #include "pw_assert_trap/handler.h"
19 #include "pw_assert_trap/message.h"
20 #include "pw_string/string_builder.h"
21 #include "pw_sync/interrupt_spin_lock.h"
22
23 static pw::sync::InterruptSpinLock interrupt_spin_lock;
24 PW_CONSTINIT static pw::InlineString<PW_ASSERT_TRAP_BUFFER_SIZE> message_buffer;
25
pw_assert_trap_get_message()26 const std::string_view pw_assert_trap_get_message() { return message_buffer; }
27
pw_assert_trap_clear_message()28 void pw_assert_trap_clear_message() { message_buffer.clear(); }
29
pw_assert_trap_interrupt_lock(void)30 void pw_assert_trap_interrupt_lock(void) { interrupt_spin_lock.lock(); }
31
pw_assert_trap_interrupt_unlock(void)32 void pw_assert_trap_interrupt_unlock(void) { interrupt_spin_lock.unlock(); }
33
pw_assert_trap_HandleAssertFailure(const char * file_name,int line_number,const char * function_name)34 void pw_assert_trap_HandleAssertFailure(
35 [[maybe_unused]] const char* file_name,
36 [[maybe_unused]] int line_number,
37 [[maybe_unused]] const char* function_name) {
38 pw::StringBuilder builder(message_buffer);
39
40 builder.append("PW_ASSERT() or PW_DASSERT() failure");
41
42 #if !PW_ASSERT_TRAP_DISABLE_LOCATION_CAPTURE
43 builder.append(" at ");
44 if (file_name != nullptr && line_number != -1) {
45 builder.Format("%s:%d", file_name, line_number);
46 }
47 if (function_name != nullptr) {
48 builder.Format(" %s: ", function_name);
49 }
50 #endif // !PW_ASSERT_TRAP_DISABLE_LOCATION_CAPTURE
51 }
52
pw_assert_trap_HandleCheckFailure(const char * file_name,int line_number,const char * function_name,const char * format,...)53 void pw_assert_trap_HandleCheckFailure(
54 [[maybe_unused]] const char* file_name,
55 [[maybe_unused]] int line_number,
56 [[maybe_unused]] const char* function_name,
57 const char* format,
58 ...) {
59 pw::StringBuilder builder(message_buffer);
60
61 #if !PW_ASSERT_TRAP_DISABLE_LOCATION_CAPTURE
62 if (file_name != nullptr && line_number != -1) {
63 builder.Format("%s:%d", file_name, line_number);
64 }
65 if (function_name != nullptr) {
66 builder.Format(" %s: ", function_name);
67 }
68 #endif // !PW_ASSERT_TRAP_DISABLE_LOCATION_CAPTURE
69
70 va_list args;
71 va_start(args, format);
72 builder.FormatVaList(format, args);
73 va_end(args);
74 }
75