diff options
Diffstat (limited to 'fedora/.local/bin/htop-vim/TraceScreen.c')
| -rw-r--r-- | fedora/.local/bin/htop-vim/TraceScreen.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/fedora/.local/bin/htop-vim/TraceScreen.c b/fedora/.local/bin/htop-vim/TraceScreen.c deleted file mode 100644 index 2aa0781..0000000 --- a/fedora/.local/bin/htop-vim/TraceScreen.c +++ /dev/null @@ -1,193 +0,0 @@ -/* -htop - TraceScreen.c -(C) 2005-2006 Hisham H. Muhammad -Released under the GNU GPLv2+, see the COPYING file -in the source distribution for its full text. -*/ - -#include "config.h" // IWYU pragma: keep - -#include "TraceScreen.h" - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/select.h> -#include <sys/wait.h> - -#include "CRT.h" -#include "FunctionBar.h" -#include "Panel.h" -#include "ProvideCurses.h" -#include "XUtils.h" - - -static const char* const TraceScreenFunctions[] = {"Search ", "Filter ", "AutoScroll ", "Stop Tracing ", "Done ", NULL}; - -static const char* const TraceScreenKeys[] = {"F3", "F4", "F8", "F9", "Esc"}; - -static const int TraceScreenEvents[] = {KEY_F(3), KEY_F(4), KEY_F(8), KEY_F(9), 27}; - -TraceScreen* TraceScreen_new(const Process* process) { - // This initializes all TraceScreen variables to "false" so only default = true ones need to be set below - TraceScreen* this = xCalloc(1, sizeof(TraceScreen)); - Object_setClass(this, Class(TraceScreen)); - this->tracing = true; - FunctionBar* fuBar = FunctionBar_new(TraceScreenFunctions, TraceScreenKeys, TraceScreenEvents); - CRT_disableDelay(); - return (TraceScreen*) InfoScreen_init(&this->super, process, fuBar, LINES - 2, " "); -} - -void TraceScreen_delete(Object* cast) { - TraceScreen* this = (TraceScreen*) cast; - if (this->child > 0) { - kill(this->child, SIGTERM); - while (waitpid(this->child, NULL, 0) == -1) - if (errno != EINTR) - break; - } - - if (this->strace) { - fclose(this->strace); - } - - CRT_enableDelay(); - free(InfoScreen_done((InfoScreen*)this)); -} - -static void TraceScreen_draw(InfoScreen* this) { - InfoScreen_drawTitled(this, "Trace of process %d - %s", this->process->pid, Process_getCommand(this->process)); -} - -bool TraceScreen_forkTracer(TraceScreen* this) { - int fdpair[2] = {0, 0}; - - if (pipe(fdpair) == -1) - return false; - - if (fcntl(fdpair[0], F_SETFL, O_NONBLOCK) < 0) - goto err; - - if (fcntl(fdpair[1], F_SETFL, O_NONBLOCK) < 0) - goto err; - - pid_t child = fork(); - if (child == -1) - goto err; - - if (child == 0) { - close(fdpair[0]); - - dup2(fdpair[1], STDOUT_FILENO); - dup2(fdpair[1], STDERR_FILENO); - close(fdpair[1]); - - char buffer[32] = {0}; - xSnprintf(buffer, sizeof(buffer), "%d", this->super.process->pid); - // Use of NULL in variadic functions must have a pointer cast. - // The NULL constant is not required by standard to have a pointer type. - execlp("strace", "strace", "-T", "-tt", "-s", "512", "-p", buffer, (char *)NULL); - - // Should never reach here, unless execlp fails ... - const char* message = "Could not execute 'strace'. Please make sure it is available in your $PATH."; - (void)! write(STDERR_FILENO, message, strlen(message)); - - exit(127); - } - - FILE* fd = fdopen(fdpair[0], "r"); - if (!fd) - goto err; - - close(fdpair[1]); - - this->child = child; - this->strace = fd; - return true; - -err: - close(fdpair[1]); - close(fdpair[0]); - return false; -} - -static void TraceScreen_updateTrace(InfoScreen* super) { - TraceScreen* this = (TraceScreen*) super; - char buffer[1025]; - - int fd_strace = fileno(this->strace); - assert(fd_strace != -1); - - fd_set fds; - FD_ZERO(&fds); -// FD_SET(STDIN_FILENO, &fds); - FD_SET(fd_strace, &fds); - - struct timeval tv = { .tv_sec = 0, .tv_usec = 500 }; - int ready = select(fd_strace + 1, &fds, NULL, NULL, &tv); - - size_t nread = 0; - if (ready > 0 && FD_ISSET(fd_strace, &fds)) - nread = fread(buffer, 1, sizeof(buffer) - 1, this->strace); - - if (nread && this->tracing) { - const char* line = buffer; - buffer[nread] = '\0'; - for (size_t i = 0; i < nread; i++) { - if (buffer[i] == '\n') { - buffer[i] = '\0'; - if (this->contLine) { - InfoScreen_appendLine(&this->super, line); - this->contLine = false; - } else { - InfoScreen_addLine(&this->super, line); - } - line = buffer + i + 1; - } - } - if (line < buffer + nread) { - InfoScreen_addLine(&this->super, line); - buffer[nread] = '\0'; - this->contLine = true; - } - if (this->follow) { - Panel_setSelected(this->super.display, Panel_size(this->super.display) - 1); - } - } -} - -static bool TraceScreen_onKey(InfoScreen* super, int ch) { - TraceScreen* this = (TraceScreen*) super; - switch (ch) { - case 'f': - case KEY_F(8): - this->follow = !(this->follow); - if (this->follow) - Panel_setSelected(super->display, Panel_size(super->display) - 1); - return true; - case 't': - case KEY_F(9): - this->tracing = !this->tracing; - FunctionBar_setLabel(super->display->defaultBar, KEY_F(9), this->tracing ? "Stop Tracing " : "Resume Tracing "); - InfoScreen_draw(this); - return true; - } - this->follow = false; - return false; -} - -const InfoScreenClass TraceScreen_class = { - .super = { - .extends = Class(Object), - .delete = TraceScreen_delete - }, - .draw = TraceScreen_draw, - .onErr = TraceScreen_updateTrace, - .onKey = TraceScreen_onKey, -}; |