2006-04-12 01:59:08 +02:00
|
|
|
/**
|
|
|
|
* =========================================================================
|
|
|
|
* File : sysdep.h
|
|
|
|
* Project : 0 A.D.
|
|
|
|
* Description : various system-specific function implementations
|
|
|
|
* =========================================================================
|
|
|
|
*/
|
|
|
|
|
2007-05-07 18:33:24 +02:00
|
|
|
// license: GPL; see lib/license.txt
|
2006-04-12 01:59:08 +02:00
|
|
|
|
2007-04-30 16:35:19 +02:00
|
|
|
#ifndef INCLUDED_SYSDEP
|
|
|
|
#define INCLUDED_SYSDEP
|
2004-03-03 00:56:51 +01:00
|
|
|
|
2006-06-22 20:26:08 +02:00
|
|
|
#include "lib/debug.h" // ErrorReaction
|
2006-09-04 22:59:21 +02:00
|
|
|
|
2007-04-30 21:58:04 +02:00
|
|
|
#include <cstdarg> // needed for sys_vsnprintf
|
2004-07-13 00:05:49 +02:00
|
|
|
|
2006-08-04 11:30:43 +02:00
|
|
|
|
2005-08-09 18:23:19 +02:00
|
|
|
//
|
|
|
|
// output
|
|
|
|
//
|
2004-03-03 00:56:51 +01:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* display a message.
|
|
|
|
*
|
|
|
|
* @param caption title message
|
|
|
|
* @param msg message contents
|
|
|
|
*
|
|
|
|
* implemented as a MessageBox on Win32 and printf on Unix.
|
2008-09-27 12:05:11 +02:00
|
|
|
* called from debug_DisplayMessage.
|
2008-09-18 13:27:55 +02:00
|
|
|
**/
|
|
|
|
extern void sys_display_msg(const wchar_t* caption, const wchar_t* msg);
|
2005-12-12 20:19:30 +01:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* show the error dialog.
|
|
|
|
*
|
|
|
|
* @param text to display (practically unlimited length)
|
|
|
|
* @param flags: see DebugDisplayErrorFlags.
|
|
|
|
* @return ErrorReaction (except ER_EXIT, which is acted on immediately)
|
|
|
|
*
|
2008-09-27 12:05:11 +02:00
|
|
|
* called from debug_DisplayError unless overridden by means of
|
2008-09-18 13:27:55 +02:00
|
|
|
* ah_display_error.
|
|
|
|
**/
|
|
|
|
extern ErrorReaction sys_display_error(const wchar_t* text, size_t flags);
|
2004-03-03 00:56:51 +01:00
|
|
|
|
2004-03-03 01:37:41 +01:00
|
|
|
|
2005-12-07 04:38:39 +01:00
|
|
|
//
|
|
|
|
// misc
|
|
|
|
//
|
2005-09-14 18:58:10 +02:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* sys_vsnprintf: doesn't quite follow the standard for vsnprintf, but works
|
|
|
|
* better across compilers:
|
|
|
|
* - handles positional parameters and %lld
|
|
|
|
* - always null-terminates the buffer
|
|
|
|
* - returns -1 on overflow (if the output string (including null) does not fit in the buffer)
|
|
|
|
**/
|
2007-04-30 21:58:04 +02:00
|
|
|
extern int sys_vsnprintf(char* buffer, size_t count, const char* format, va_list argptr);
|
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* describe the current OS error state.
|
|
|
|
*
|
|
|
|
* @param err: if not 0, use that as the error code to translate; otherwise,
|
|
|
|
* uses GetLastError or similar.
|
|
|
|
* @param buf output buffer
|
|
|
|
* @param max_chars
|
|
|
|
*
|
|
|
|
* rationale: it is expected to be rare that OS return/error codes are
|
|
|
|
* actually seen by user code, but we leave the possibility open.
|
|
|
|
**/
|
2005-12-11 23:23:55 +01:00
|
|
|
extern LibError sys_error_description_r(int err, char* buf, size_t max_chars);
|
2005-11-19 19:12:16 +01:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* determine filename of the module to whom an address belongs.
|
|
|
|
*
|
|
|
|
* @param path receives full path to module or L"" on error.
|
|
|
|
* @param max_chars
|
|
|
|
*
|
|
|
|
* note: this is useful for handling exceptions in other modules.
|
|
|
|
**/
|
|
|
|
void sys_get_module_filename(void* addr, wchar_t* path, size_t max_chars);
|
2005-12-07 04:38:39 +01:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* get path to the current executable.
|
|
|
|
*
|
|
|
|
* @param n_path receives the full native path.
|
|
|
|
* @param max_chars
|
|
|
|
*
|
|
|
|
* this is useful for determining installation directory, e.g. for VFS.
|
|
|
|
**/
|
|
|
|
extern LibError sys_get_executable_name(char* n_path, size_t max_chars);
|
2005-12-07 04:38:39 +01:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* have the user choose a directory via OS dialog.
|
|
|
|
*
|
|
|
|
* @param n_path receives the full native path.
|
|
|
|
* @param max_chars must be at least PATH_MAX due to a Win32 limitation.
|
|
|
|
**/
|
|
|
|
extern LibError sys_pick_directory(char* n_path, size_t max_chars);
|
2004-06-03 03:43:33 +02:00
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* return the largest sector size [bytes] of any storage medium
|
|
|
|
* (HD, optical, etc.) in the system.
|
|
|
|
*
|
|
|
|
* this may be a bit slow to determine (iterates over all drives),
|
|
|
|
* but caches the result so subsequent calls are free.
|
|
|
|
* (caveat: device changes won't be noticed during this program run)
|
|
|
|
*
|
|
|
|
* sector size is relevant because Windows aio requires all IO
|
|
|
|
* buffers, offsets and lengths to be a multiple of it. this requirement
|
|
|
|
* is also carried over into the vfs / file.cpp interfaces for efficiency
|
|
|
|
* (avoids the need for copying to/from align buffers).
|
|
|
|
*
|
|
|
|
* waio uses the sector size to (in some cases) align IOs if
|
|
|
|
* they aren't already, but it's also needed by user code when
|
|
|
|
* aligning their buffers to meet the requirements.
|
|
|
|
*
|
|
|
|
* the largest size is used so that we can read from any drive. while this
|
|
|
|
* is a bit wasteful (more padding) and requires iterating over all drives,
|
|
|
|
* it is the only safe way: this may be called before we know which
|
|
|
|
* drives will be needed, and hardlinks may confuse things.
|
|
|
|
**/
|
2006-04-03 03:00:45 +02:00
|
|
|
extern size_t sys_max_sector_size();
|
|
|
|
|
2008-09-18 13:27:55 +02:00
|
|
|
/**
|
|
|
|
* directory separation character
|
|
|
|
**/
|
2006-03-15 06:18:32 +01:00
|
|
|
#if OS_WIN
|
2006-11-18 18:48:49 +01:00
|
|
|
# define SYS_DIR_SEP '\\'
|
2006-03-15 06:18:32 +01:00
|
|
|
#else
|
2006-11-18 18:48:49 +01:00
|
|
|
# define SYS_DIR_SEP '/'
|
2006-03-15 06:18:32 +01:00
|
|
|
#endif
|
|
|
|
|
2007-04-30 16:35:19 +02:00
|
|
|
#endif // #ifndef INCLUDED_SYSDEP
|