op_mangle.c

Go to the documentation of this file.

#include "op_mangle.h"

#include <string.h>
#include <stdio.h>

#include "op_libiberty.h"

#include "op_sample_file.h"
#include "op_config.h"

static void append_image(char * dest, int flags, int anon, char const * name, char const * anon_name)
{
    if ((flags & MANGLE_KERNEL) && !strchr(name, '/')) {
        strcat(dest, "{kern}/");
    } else if (anon) {
        strcat(dest, "{anon:");
        strcat(dest, anon_name);
        strcat(dest,"}/");
    } else {
        strcat(dest, "{root}/");
    }

    strcat(dest, name);
    strcat(dest, "/");
}

char * op_mangle_filename(struct mangle_values const * values)
{
    char * mangled;
    size_t len;
    int anon = values->flags & MANGLE_ANON;
    int cg_anon = values->flags & MANGLE_CG_ANON;
    /* if dep_name != image_name we need to invert them (and so revert them
     * unconditionally because if they are equal it doesn't hurt to invert
     * them), see P:3, FIXME: this is a bit weirds, we prolly need to
     * reword pp_interface */
    char const * image_name = values->dep_name;
    char const * anon_name = values->anon_name;
    char const * dep_name = values->image_name;
    char const * cg_image_name = values->cg_image_name;

    len = strlen(op_samples_current_dir) + strlen(dep_name) + 1
        + strlen(values->event_name) + 1 + strlen(image_name) + 1;

    if (values->flags & MANGLE_CALLGRAPH)
        len += strlen(cg_image_name) + 1;

    if (anon || cg_anon)
        len += strlen(anon_name);

    /* provision for tgid, tid, unit_mask, cpu and some {root}, {dep},
     * {kern}, {anon} and {cg} marker */
    /* FIXME: too ugly */
    len += 256;

    mangled = xmalloc(len);

    strcpy(mangled, op_samples_current_dir);
    append_image(mangled, values->flags, 0, image_name, anon_name);

    strcat(mangled, "{dep}" "/");
    append_image(mangled, values->flags, anon, dep_name, anon_name);

    if (values->flags & MANGLE_CALLGRAPH) {
        strcat(mangled, "{cg}" "/");
        append_image(mangled, values->flags, cg_anon,
                     cg_image_name, anon_name);
    }

    strcat(mangled, values->event_name);
    sprintf(mangled + strlen(mangled), ".%d.%d.",
            values->count, values->unit_mask);

    if (values->flags & MANGLE_TGID) {
        sprintf(mangled + strlen(mangled), "%d.", values->tgid);
    } else {
        sprintf(mangled + strlen(mangled), "%s.", "all");
    }

    if (values->flags & MANGLE_TID) {
        sprintf(mangled + strlen(mangled), "%d.", values->tid);
    } else {
        sprintf(mangled + strlen(mangled), "%s.", "all");
    }

    if (values->flags & MANGLE_CPU) {
        sprintf(mangled + strlen(mangled), "%d", values->cpu);
    } else {
        sprintf(mangled + strlen(mangled), "%s", "all");
    }

    return mangled;
}