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root/truck/Common/posix.hpp
Revision: 14
Committed: 2007-05-14T18:24:34-07:00 (15 years, 1 month ago) by douglas
File size: 1415 byte(s)
Log Message:
Switch back from Menes C++ to stl and hacks.

File Contents

# Content
1 // Truck Computer Dooom!
2 //
3 // Douglas Thrift
4 //
5 // $Id$
6
7 #ifndef _posix_hpp_
8 #define _posix_hpp_
9
10 #include <cerrno>
11 #include <cstring>
12 #include <exception>
13 #include <string>
14
15 namespace Posix
16 {
17
18 inline int CheckError(int status);
19
20 class Error : public std::exception
21 {
22 int code;
23 char message[1024];
24
25 public:
26 Error();
27 virtual ~Error() throw() {}
28
29 virtual int GetCode() const { return code; }
30 virtual std::string GetMessage() const { return message; }
31 virtual const char *what() const throw() { return message; }
32 };
33
34 inline int CheckError(int status)
35 {
36 if (status == -1)
37 throw Error();
38
39 return status;
40 }
41
42 #define _SysCall(call) \
43 int status; \
44 \
45 while ((status = call) == -1) \
46 if (errno != EINTR) \
47 throw Error(); \
48 else \
49 continue; \
50 \
51 return status
52
53 template <typename Function_, typename Arg0_, typename Arg1_>
54 int SysCall(Function_ function, Arg0_ arg0, Arg1_ arg1)
55 {
56 _SysCall(function(arg0, arg1));
57 }
58
59 template <typename Function_, typename Arg0_, typename Arg1_, typename Arg2_>
60 int SysCall(Function_ function, Arg0_ arg0, Arg1_ arg1, Arg2_ arg2)
61 {
62 _SysCall(function(arg0, arg1, arg2));
63 }
64
65 #undef _SysCall
66
67 int Open(const std::string &path, int flags, ::mode_t mode);
68
69 inline int Open(const std::string &path, int flags)
70 {
71 return Open(path, flags, 0);
72 }
73
74 size_t Read(int fd, void *buffer, size_t bytes);
75 size_t ReadMost(int fd, void *buffer, size_t bytes);
76
77 }
78
79 #endif//_posix_hpp_

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