linux application development

Some development application commands for Linux (Standard gun assembler)The As command is the standard GNU assembler program. As command to read and assemble the specified file (this file ends with. s) If you do not specify a file, the As command reads and assembles the standard input, and by default, he stores its output in a file with an. o extension, and runs

Linux Application Development-multi-process programming One creation processThe difference between fork and vfork1 Fork creates a child process that has its own data segment and stack and vfork creates a child process that shares the data segment with the parent processTwo-process exitThe parent process can use return 0 and exit (0) and the child process can only

Linux application Development-memory sharingA virtual memoryWhen the program runs, it loads the required data into physical memory, and the other loads the virtual memoryThe kernel state and user state are the methods within the systemTwo command IPCS view the current mode of communication of the systemThree-action function get the shared memory address ShmgetMa

Embedded Linux application Development detailed Jie Huaqing Vision This article is just reading the digest.Steps to create a daemon: 1, create a child process, and then exit the parent process, 2, create a new session in a child process---setsid (), 3, change the current working directory---chdir (), 4, reset the file permission mask---umask (), 5, Close all file

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationin the VS The debugger that is available for this project is listed in the Debug Properties page:first to MSBUILD directory to find the parameters of this page, it is easy to reap:C:\Program Files (x86) \msbuild\microsoft.cpp\v4.0\v110\2052\debugger_remote_windows.xml (3): RemoteWindowsDebugger" pagetemplate=" Debugger "description= "RemoteWindowsDebugger Options"xmlns=" > "Http://schemas.microsoft

any key exit");Getch ();Exit (1);}CH=FGETC (FP);while (CH!=EOP){Putchar (CH);CH=FGETC (FP);}Fclose (FP);}Write characterint fputs (Inyt c,file*stream)Example:#include Main (){FILE*FP;Char ch;if ((Fp=fopen ("string", "w+")) ==null){printf ("\ncannot open file, strike any key exit");Getch ();Exit (1);}printf ("Input a string:\n");Ch=fgetchar ();while (ch!= ' \ n '){FPUTC (CH,FP);Ch=getchar ();}printf ("\ n");Fclose (FP);}Format read:FSCANF (File*stream,char*format[,argument ...])Format input from

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationvs ctrl+f5 You can run without debugging, but the environment variables it runs can still be passed to the application, in our debug scenario we use a Remoteconsole stub program in the debug state, Embedlinux The debug engine opens an automatically selected service port when you start debugging, and then passes the port number through th

version is incompatible, or the program's previous collaborative relationship has been damaged, or there is a significant improvement or enhancement of functionality. This version number is determined by the project to modify.(3) Revision number: usually bug fixes or some minor changes or expansion of some functions, to publish a revision frequently, fix a serious bug to publish a revision. This version number is determined by the project manager to modify.8. Remove UltraEdit Open file hint "fi

Linux application Development-famous pipeline programmingA famous pipeFor any two process communication, known as a pipeline called FIFO file, so weThe operation of the Tao can take the method of manipulating files, such as using Open,read,write.2 FeaturesFIFO files have similarities to normal files in use, but there are differences:1. Processes that read FIFO fi

Linux application Development-i/o operationlinux-i/o1 Kernel Method->VFS virtual file system->lib System API, System-related non-standard api-> standard C Api->app2 Bus has many specifications, different specifications of the bus is not the same, the bus is used to transmit data, provide transmission and addressing methods, such as PCI is the bus specifications,3

Linux Application Development-ThreadingThread Operation functionPrecautions :Header files: #include Build Note: link library-lpthread1 Creating Threadsint Pthread_create (pthread_t *thread, const pthread_attr, void * (*start_routine) (void *0, void *arg)) 2 exiting a threadvoid Pthread_exit (void *retval) 3 Child threads exitedvoid Pthread_join (pthread_t thread

IDebugDisassemblyStream2 the implementation of the interface, a toss, fix:but it's strange that the options " Show Source Code " This one doesn't work anyway. As described in the document and as a normal conjecture, when disassembled,theSDM invokes the public int Read (UINT dwinstructions, enum_disassembly_stream_fields dwfields, out uint Pdwinstructionsread, Disassemblydata[] prgdisassembly)through Dwfields should be able to get the option to show the source code, but in fact this value

save these options to the vcxproj project file. When MSBUILD compiles, these parameters can be passed to our custom compilation task.It is important to note that in this XML file: datasource persistence =" projectfile " label =" configuration " hasconfigurationcondition =" true "/> The Label here can only fill in a fixed value, such as configuration , Clcompile, Link , and so on, if it is not defined in the props file attribute values are not displayed correctly.You can find a few

two operations when executing stepout when -exec-return^done,frame={level= "0", func= "Callee3",Args=[{name= "Strarg",value= "0x11940 \" A string Argument.\ ""}],File= ". /.. /.. /DEVO/GDB/TESTSUITE/GDB.MI/BASICS.C ",Fullname= "/HOME/FOO/BAR/DEVO/GDB/TESTSUITE/GDB.MI/BASICS.C", line= "18"}which means it directly outputs the ^done while the other two operations use the *stopped Information:-exec-step^running(GDB)*stopped,reason= "End-stepping-range", line= ", file=" recursive2.c "The same

process that produces a new PID;EXEC starts a new program, replaces the original process, and the PID does not change.#include int execl (const char*path,const CHAR*ARG1,...);Path: The name of the program being executedARGN: command-line arguments, with parameter names, ending with a null pointer (NULL)Example:#include Main (){Execl ("/bin/ls", "ls", "-al", "/etc/passwd", (char*) 0);}#include int EXECP (const char*path,const CHAR*ARG1,...);Path: The name of the program being executed (without t

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationAfter starting debugging, there is a problem, that is, the debug parameter delivery, when the debugger started, we seem to have been unable to obtain the IDE project parameters, which can only be passed through the debugger's environment variables at this time. First, define the relevant information for the target machine in the project parameters:These parameters are then passed in through the deb

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationoriginally thought to build a static library requires only overloading the task would be: Target Name= "Lib" > MessageText="Lib Target"Importance=" High"/> Embedlinuxlinktask TargetName= "implib" NBSP;NBSP;NBSP;NBSP;NBSP; projectdir =" $ (ProjectDir) " NBSP;NBSP;NBSP;NBSP;NBSP; outdir = " $ (OutDir) " NBSP;NBSP;NBSP;NBSP; targetfilename =" $ (targetfilename) " NB

http://blog.csdn.net/zqixiao_09/article/details/50888795 We have learned the theoretical knowledge of platform devices in front of Linux device driver development--platform device driver, the following will be an example to delve into our learning. first, the platform driven work process Platform model-driven programming requires the implementation of Platform_device (device) and platform_driver (drive) r

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationvs2013 provides a text visualization tool that displays xml vs2013 can also display our string: First we need to determine the return value type of the expression, and if it is a string, set the if (_evalresult.flags.hasflag (EVALUATIONFLAGS.HASRAWREPR)) { Propertyinfo.dwattrib |= enum_dbg_attrib_flags. dbg_attrib_value_raw_string; }after

: The memory bytes as represented by the IDebugMemoryBytes2 object was for the program's image in memory and not any Memor Y//That is allocated when the program was executed. public int getmemorybytes (out IDebugMemoryBytes2 ppmemorybytes) { ppmemorybytes = new Ad7memorybytes (this); return CONSTANTS.S_OK; }This only implements an empty interface, and does not implement the refresh of the actual memory value, but at this time it is possib