sysv

问题 Why does al contain the number of vector parameters in assembly? Why are vector parameters any different from normal parameters for the callee? 回答1: The value is used for optimization as stated in the ABI document The prologue should use %al to avoid unnecessarily saving XMM registers. This is especially important for integer only programs to prevent the initialization of the XMM unit. 3.5.7 Variable Argument Lists - The Register Save Area. System V Application Binary Interface version 1.0

问题 Why does al contain the number of vector parameters in assembly? Why are vector parameters any different from normal parameters for the callee? 回答1: The value is used for optimization as stated in the ABI document The prologue should use %al to avoid unnecessarily saving XMM registers. This is especially important for integer only programs to prevent the initialization of the XMM unit. 3.5.7 Variable Argument Lists - The Register Save Area. System V Application Binary Interface version 1.0

问题 Why does al contain the number of vector parameters in assembly? Why are vector parameters any different from normal parameters for the callee? 回答1: The value is used for optimization as stated in the ABI document The prologue should use %al to avoid unnecessarily saving XMM registers. This is especially important for integer only programs to prevent the initialization of the XMM unit. 3.5.7 Variable Argument Lists - The Register Save Area. System V Application Binary Interface version 1.0

问题 Why does al contain the number of vector parameters in assembly? Why are vector parameters any different from normal parameters for the callee? 回答1: The value is used for optimization as stated in the ABI document The prologue should use %al to avoid unnecessarily saving XMM registers. This is especially important for integer only programs to prevent the initialization of the XMM unit. 3.5.7 Variable Argument Lists - The Register Save Area. System V Application Binary Interface version 1.0

来源： https://stackoverflow.com/questions/64073080/convert-binutils-size-output-from-sysv-format-size-format-sysv-my-execut

来源： https://stackoverflow.com/questions/64073080/convert-binutils-size-output-from-sysv-format-size-format-sysv-my-execut

来源： https://stackoverflow.com/questions/64073080/convert-binutils-size-output-from-sysv-format-size-format-sysv-my-execut

问题 Im using System V Message Queue, which does not have a "timed receive" function, like POSIX MQ. But now i need it (this timed receive func.). One can ask: "so why dont you use POSIX instead of Sys V?". Because in my benchmarks SysV MQ was +- 20% faster than POSIX MQ. Now the question. How to fake a "timed receive" for Sys V MQ? I wrote a piece of code that does it testing msgrcv with IPC_NOWAIT in a loop with usleep . I think its ugly, so i need ideas to write a beautiful one =] 回答1: You

问题 Im using System V Message Queue, which does not have a "timed receive" function, like POSIX MQ. But now i need it (this timed receive func.). One can ask: "so why dont you use POSIX instead of Sys V?". Because in my benchmarks SysV MQ was +- 20% faster than POSIX MQ. Now the question. How to fake a "timed receive" for Sys V MQ? I wrote a piece of code that does it testing msgrcv with IPC_NOWAIT in a loop with usleep . I think its ugly, so i need ideas to write a beautiful one =] 回答1: You

问题 Say I have a go project that based on which OS, and in some cases which distro, I want to use say a Systemd client package vs an Upstart client package vs a sysv client package vs a launchd client package. Is it possible to selectively import each package so I only import the one I need per OS/distro I'm building for? Or do I have to import each package for each OS/distro? 回答1: Package build Build Constraints A build constraint, also known as a build tag, is a line comment that begins //