Bitcoin ABC  0.29.4
P2P Digital Currency
system.cpp
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1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2019 The Bitcoin Core developers
3 // Distributed under the MIT software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 
6 #include <common/system.h>
7 
8 #include <logging.h>
9 #include <util/string.h>
10 #include <util/time.h>
11 #include <util/translation.h>
12 
13 #include <cstdlib>
14 #include <locale>
15 #include <stdexcept>
16 #include <string>
17 #include <thread>
18 
19 #ifndef WIN32
20 #include <sys/stat.h>
21 #else
22 #ifdef _MSC_VER
23 #pragma warning(disable : 4786)
24 #pragma warning(disable : 4804)
25 #pragma warning(disable : 4805)
26 #pragma warning(disable : 4717)
27 #endif
28 
29 #ifndef NOMINMAX
30 #define NOMINMAX
31 #endif
32 #include <codecvt>
33 #endif
34 
35 #ifdef HAVE_MALLOPT_ARENA_MAX
36 #include <malloc.h>
37 #endif
38 
39 // Application startup time (used for uptime calculation)
40 const int64_t nStartupTime = GetTime();
41 
42 #ifndef WIN32
43 std::string ShellEscape(const std::string &arg) {
44  std::string escaped = arg;
45  ReplaceAll(escaped, "'", "'\"'\"'");
46  return "'" + escaped + "'";
47 }
48 #endif
49 
50 #if defined(HAVE_SYSTEM)
51 void runCommand(const std::string &strCommand) {
52  if (strCommand.empty()) {
53  return;
54  }
55 #ifndef WIN32
56  int nErr = ::system(strCommand.c_str());
57 #else
58  int nErr = ::_wsystem(
59  std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>()
60  .from_bytes(strCommand)
61  .c_str());
62 #endif
63  if (nErr) {
64  LogPrintf("runCommand error: system(%s) returned %d\n", strCommand,
65  nErr);
66  }
67 }
68 #endif
69 
71 #ifdef HAVE_MALLOPT_ARENA_MAX
72  // glibc-specific: On 32-bit systems set the number of arenas to 1. By
73  // default, since glibc 2.10, the C library will create up to two heap
74  // arenas per core. This is known to cause excessive virtual address space
75  // usage in our usage. Work around it by setting the maximum number of
76  // arenas to 1.
77  if (sizeof(void *) == 4) {
78  mallopt(M_ARENA_MAX, 1);
79  }
80 #endif
81 // On most POSIX systems (e.g. Linux, but not BSD) the environment's locale may
82 // be invalid, in which case the "C.UTF-8" locale is used as fallback.
83 #if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && \
84  !defined(__OpenBSD__)
85  try {
86  // Raises a runtime error if current locale is invalid.
87  std::locale("");
88  } catch (const std::runtime_error &) {
89  setenv("LC_ALL", "C.UTF-8", 1);
90  }
91 #elif defined(WIN32)
92  // Set the default input/output charset is utf-8
93  SetConsoleCP(CP_UTF8);
94  SetConsoleOutputCP(CP_UTF8);
95 #endif
96 }
97 
99 #ifdef WIN32
100  // Initialize Windows Sockets.
101  WSADATA wsadata;
102  int ret = WSAStartup(MAKEWORD(2, 2), &wsadata);
103  if (ret != NO_ERROR || LOBYTE(wsadata.wVersion) != 2 ||
104  HIBYTE(wsadata.wVersion) != 2) {
105  return false;
106  }
107 #endif
108  return true;
109 }
110 
111 int GetNumCores() {
112  return std::thread::hardware_concurrency();
113 }
114 
115 // Obtain the application startup time (used for uptime calculation)
116 int64_t GetStartupTime() {
117  return nStartupTime;
118 }
#define LogPrintf(...)
Definition: logging.h:206
void ReplaceAll(std::string &in_out, const std::string &search, const std::string &substitute)
Definition: string.cpp:10
int64_t GetStartupTime()
Definition: system.cpp:116
bool SetupNetworking()
Definition: system.cpp:98
void SetupEnvironment()
Definition: system.cpp:70
const int64_t nStartupTime
Definition: system.cpp:40
int GetNumCores()
Return the number of cores available on the current system.
Definition: system.cpp:111
std::string ShellEscape(const std::string &arg)
Definition: system.cpp:43
int64_t GetTime()
Definition: time.cpp:109