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Add support for 'ltrace' in addition to 'strace' support.
Index: htop/TraceScreen.c
===================================================================
--- htop.orig/TraceScreen.c 2011-01-16 17:02:59.000000000 +0200
+++ htop/TraceScreen.c 2011-01-16 18:15:07.000000000 +0200
@@ -23,11 +23,17 @@
/*{
+typedef enum TraceType_ {
+ STRACE,
+ LTRACE
+} TraceType;
+
typedef struct TraceScreen_ {
Process* process;
Panel* display;
FunctionBar* bar;
bool tracing;
+ TraceType type;
} TraceScreen;
}*/
@@ -38,9 +44,10 @@
static int tsEvents[] = {KEY_F(4), KEY_F(5), 27};
-TraceScreen* TraceScreen_new(Process* process) {
+TraceScreen* TraceScreen_new(Process* process, TraceType type) {
TraceScreen* this = (TraceScreen*) malloc(sizeof(TraceScreen));
this->process = process;
+ this->type = type;
this->display = Panel_new(0, 1, COLS, LINES-2, LISTITEM_CLASS, true, ListItem_compare);
this->bar = FunctionBar_new(tsFunctions, tsKeys, tsEvents);
this->tracing = true;
@@ -56,7 +63,14 @@
static void TraceScreen_draw(TraceScreen* this) {
attrset(CRT_colors[PANEL_HEADER_FOCUS]);
mvhline(0, 0, ' ', COLS);
- mvprintw(0, 0, "Trace of process %d - %s", this->process->pid, this->process->comm);
+ switch(this->type) {
+ case STRACE:
+ mvprintw(0, 0, "Trace of process %d - %s (STRACE)", this->process->pid, this->process->comm);
+ break;
+ case LTRACE:
+ mvprintw(0, 0, "Trace of process %d - %s (LTRACE)", this->process->pid, this->process->comm);
+ break;
+ }
attrset(CRT_colors[DEFAULT_COLOR]);
FunctionBar_draw(this->bar, NULL);
}
@@ -73,15 +87,24 @@
dup2(fdpair[1], STDERR_FILENO);
fcntl(fdpair[1], F_SETFL, O_NONBLOCK);
sprintf(buffer, "%d", this->process->pid);
- execlp("strace", "strace", "-p", buffer, NULL);
- const char* message = "Could not execute 'strace'. Please make sure it is available in your $PATH.";
+ const char* message;
+ switch(this->type) {
+ case STRACE:
+ execlp("strace", "strace", "-p", buffer, NULL);
+ message = "Could not execute 'strace'. Please make sure it is available in your $PATH.";
+ break;
+ case LTRACE:
+ execlp("ltrace", "ltrace", "-p", buffer, NULL);
+ message = "Could not execute 'ltrace'. Please make sure it is available in your $PATH.";
+ break;
+ }
write(fdpair[1], message, strlen(message));
exit(1);
}
fcntl(fdpair[0], F_SETFL, O_NONBLOCK);
- FILE* strace = fdopen(fdpair[0], "r");
+ FILE* trace = fdopen(fdpair[0], "r");
Panel* panel = this->display;
- int fd_strace = fileno(strace);
+ int fd_trace = fileno(trace);
TraceScreen_draw(this);
CRT_disableDelay();
bool contLine = false;
@@ -90,13 +113,13 @@
while (looping) {
fd_set fds;
FD_ZERO(&fds);
- FD_SET(fd_strace, &fds);
+ FD_SET(fd_trace, &fds);
struct timeval tv;
tv.tv_sec = 0; tv.tv_usec = 500;
- int ready = select(fd_strace+1, &fds, NULL, NULL, &tv);
+ int ready = select(fd_trace+1, &fds, NULL, NULL, &tv);
int nread = 0;
if (ready > 0)
- nread = fread(buffer, 1, 1000, strace);
+ nread = fread(buffer, 1, 1000, trace);
if (nread && this->tracing) {
char* line = buffer;
buffer[nread] = '\0';
@@ -171,6 +194,6 @@
}
kill(child, SIGTERM);
waitpid(child, NULL, 0);
- fclose(strace);
+ fclose(trace);
CRT_enableDelay();
}
Index: htop/TraceScreen.h
===================================================================
--- htop.orig/TraceScreen.h 2009-06-29 13:18:40.000000000 +0300
+++ htop/TraceScreen.h 2011-01-16 18:15:07.000000000 +0200
@@ -25,15 +25,21 @@
#include "FunctionBar.h"
+typedef enum TraceType_ {
+ STRACE,
+ LTRACE
+} TraceType;
+
typedef struct TraceScreen_ {
Process* process;
Panel* display;
FunctionBar* bar;
bool tracing;
+ TraceType type;
} TraceScreen;
-TraceScreen* TraceScreen_new(Process* process);
+TraceScreen* TraceScreen_new(Process* process, TraceType type);
void TraceScreen_delete(TraceScreen* this);
Index: htop/htop.1
===================================================================
--- htop.orig/htop.1.in 2011-01-16 17:02:59.000000000 +0200
+++ htop/htop.1.in 2011-01-16 18:15:07.000000000 +0200
@@ -54,6 +54,11 @@
Display open files for a process: if lsof(1) is installed, pressing this key
will display the list of file descriptors opened by the process.
.TP
+.B L
+Trace process library calls: if ltrace(1) is installed, pressing this key
+will attach it to the currently selected process, presenting a live
+update of library calls issued by the process.
+.TP
.B F1, h, ?
Go to the help screen
.TP
Index: htop/htop.c
===================================================================
--- htop.orig/htop.c 2011-01-16 17:02:59.000000000 +0200
+++ htop/htop.c 2011-01-16 18:15:07.000000000 +0200
@@ -133,6 +133,7 @@
mvaddstr(19, 0, " F2 S: setup F6 >: select sort column");
mvaddstr(20, 0, " F1 h: show this help screen l: list open files with lsof");
mvaddstr(21, 0, " F10 q: quit s: trace syscalls with strace");
+ mvaddstr(22, 0, " L: trace library calls with ltrace");
attrset(CRT_colors[HELP_BOLD]);
mvaddstr( 9, 0, " Arrows"); mvaddstr( 9,40, " F5 t");
@@ -152,10 +153,11 @@
mvaddstr(19, 0, " F2 S"); mvaddstr(19,40, " F6 >");
mvaddstr(20, 0, " ? F1 h"); mvaddstr(20,40, " l");
mvaddstr(21, 0, " F10 q"); mvaddstr(21,40, " s");
+ mvaddstr(22,40, " L");
attrset(CRT_colors[DEFAULT_COLOR]);
attrset(CRT_colors[HELP_BOLD]);
- mvaddstr(23,0, "Press any key to return.");
+ mvaddstr(24,0, "Press any key to return.");
attrset(CRT_colors[DEFAULT_COLOR]);
refresh();
CRT_readKey();
@@ -580,9 +582,20 @@
Panel_onKey(panel, KEY_DOWN);
break;
}
+ case 'L':
+ {
+ TraceScreen* ts = TraceScreen_new((Process*) Panel_getSelected(panel), LTRACE);
+ TraceScreen_run(ts);
+ TraceScreen_delete(ts);
+ clear();
+ FunctionBar_draw(defaultBar, NULL);
+ refreshTimeout = 0;
+ CRT_enableDelay();
+ break;
+ }
case 's':
{
- TraceScreen* ts = TraceScreen_new((Process*) Panel_getSelected(panel));
+ TraceScreen* ts = TraceScreen_new((Process*) Panel_getSelected(panel), STRACE);
TraceScreen_run(ts);
TraceScreen_delete(ts);
clear();
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