1 //
2 // Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
3 // SPDX-License-Identifier: MIT
4 //
5
6 #pragma once
7
8 #include <stdio.h>
9 #include <string>
10 #include <iostream>
11 #include <sys/system_properties.h>
12 #include <log/log.h>
13
14 namespace {
15 template<typename T>
16 struct ConvStringTo;
17
18 template<>
19 struct ConvStringTo<float>
20 {
Func__anon149d28500111::ConvStringTo21 static float Func(std::string s) { return std::stof(s); }
22 };
23
24 template<>
25 struct ConvStringTo<int>
26 {
Func__anon149d28500111::ConvStringTo27 static int Func(std::string s) { return std::stoi(s); }
28 };
29
30 template<>
31 struct ConvStringTo<bool>
32 {
Func__anon149d28500111::ConvStringTo33 static bool Func(std::string s) { return !!std::stoi(s); }
34 };
35
36 template<typename T>
GetCapabilitiesProperties(void * cookie,const char * name,const char * value,uint32_t serial)37 void GetCapabilitiesProperties([[maybe_unused]]void* cookie,
38 [[maybe_unused]]const char *name,
39 [[maybe_unused]]const char *value,
40 [[maybe_unused]]uint32_t serial)
41 {
42 T &prop = *reinterpret_cast<T*>(cookie);
43 prop = ConvStringTo<T>::Func(std::string(value));
44 }
45
46 template<typename T>
ParseSystemProperty(const char * name,T defaultValue)47 T ParseSystemProperty(const char* name, T defaultValue)
48 {
49 try
50 {
51 const prop_info *pInfo = __system_property_find(name);
52 if (!pInfo)
53 {
54 ALOGW("ArmnnDriver::ParseSystemProperty(): Could not find property [%s].", name);
55 } else
56 {
57 T property;
58 __system_property_read_callback(pInfo, &GetCapabilitiesProperties<T>, &property);
59 std::stringstream messageBuilder;
60 messageBuilder << "ArmnnDriver::ParseSystemProperty(): Setting [" << name << "]=[" << property << "].";
61 ALOGD("%s", messageBuilder.str().c_str());
62 return property;
63 }
64 }
65 catch(const std::invalid_argument& e)
66 {
67 ALOGD("ArmnnDriver::ParseSystemProperty(): Property [%s] has invalid data type.", name);
68 }
69 catch(const std::out_of_range& e)
70 {
71 ALOGD("ArmnnDriver::ParseSystemProperty(): Property [%s] out of range for the data type.", name);
72 }
73 catch (...)
74 {
75 ALOGD("ArmnnDriver::ParseSystemProperty(): Unexpected exception reading system "
76 "property [%s].", name);
77 }
78
79 std::stringstream messageBuilder;
80 messageBuilder << "ArmnnDriver::ParseSystemProperty(): Falling back to default value [" << defaultValue << "]";
81 ALOGD("%s", messageBuilder.str().c_str());
82 return defaultValue;
83 }
84 } //namespace
85