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319 lines
7.7 KiB
319 lines
7.7 KiB
#include "sort.h"
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regex_t parent_regex;
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const char default_parent_pattern[] = "^sys_|^do_page_fault";
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const char *parent_pattern = default_parent_pattern;
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const char default_sort_order[] = "comm,dso,symbol";
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const char *sort_order = default_sort_order;
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int sort__need_collapse = 0;
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int sort__has_parent = 0;
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enum sort_type sort__first_dimension;
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unsigned int dsos__col_width;
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unsigned int comms__col_width;
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unsigned int threads__col_width;
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static unsigned int parent_symbol__col_width;
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char * field_sep;
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LIST_HEAD(hist_entry__sort_list);
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static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width);
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static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width);
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static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width);
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static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width);
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static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width);
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struct sort_entry sort_thread = {
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.se_header = "Command: Pid",
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.se_cmp = sort__thread_cmp,
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.se_snprintf = hist_entry__thread_snprintf,
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.se_width = &threads__col_width,
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};
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struct sort_entry sort_comm = {
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.se_header = "Command",
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.se_cmp = sort__comm_cmp,
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.se_collapse = sort__comm_collapse,
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.se_snprintf = hist_entry__comm_snprintf,
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.se_width = &comms__col_width,
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};
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struct sort_entry sort_dso = {
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.se_header = "Shared Object",
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.se_cmp = sort__dso_cmp,
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.se_snprintf = hist_entry__dso_snprintf,
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.se_width = &dsos__col_width,
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};
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struct sort_entry sort_sym = {
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.se_header = "Symbol",
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.se_cmp = sort__sym_cmp,
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.se_snprintf = hist_entry__sym_snprintf,
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};
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struct sort_entry sort_parent = {
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.se_header = "Parent symbol",
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.se_cmp = sort__parent_cmp,
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.se_snprintf = hist_entry__parent_snprintf,
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.se_width = &parent_symbol__col_width,
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};
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struct sort_dimension {
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const char *name;
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struct sort_entry *entry;
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int taken;
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};
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static struct sort_dimension sort_dimensions[] = {
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{ .name = "pid", .entry = &sort_thread, },
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{ .name = "comm", .entry = &sort_comm, },
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{ .name = "dso", .entry = &sort_dso, },
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{ .name = "symbol", .entry = &sort_sym, },
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{ .name = "parent", .entry = &sort_parent, },
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};
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int64_t cmp_null(void *l, void *r)
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{
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if (!l && !r)
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return 0;
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else if (!l)
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return -1;
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else
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return 1;
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}
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/* --sort pid */
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int64_t
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sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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return right->thread->pid - left->thread->pid;
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}
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static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
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{
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int n;
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va_list ap;
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va_start(ap, fmt);
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n = vsnprintf(bf, size, fmt, ap);
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if (field_sep && n > 0) {
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char *sep = bf;
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while (1) {
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sep = strchr(sep, *field_sep);
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if (sep == NULL)
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break;
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*sep = '.';
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}
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}
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va_end(ap);
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return n;
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}
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static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width)
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{
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return repsep_snprintf(bf, size, "%*s:%5d", width,
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self->thread->comm ?: "", self->thread->pid);
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}
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static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width)
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{
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return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
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}
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/* --sort dso */
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int64_t
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sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL;
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struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL;
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const char *dso_name_l, *dso_name_r;
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if (!dso_l || !dso_r)
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return cmp_null(dso_l, dso_r);
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if (verbose) {
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dso_name_l = dso_l->long_name;
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dso_name_r = dso_r->long_name;
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} else {
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dso_name_l = dso_l->short_name;
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dso_name_r = dso_r->short_name;
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}
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return strcmp(dso_name_l, dso_name_r);
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}
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static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width)
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{
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if (self->ms.map && self->ms.map->dso) {
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const char *dso_name = !verbose ? self->ms.map->dso->short_name :
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self->ms.map->dso->long_name;
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return repsep_snprintf(bf, size, "%-*s", width, dso_name);
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}
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return repsep_snprintf(bf, size, "%*Lx", width, self->ip);
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}
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/* --sort symbol */
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int64_t
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sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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u64 ip_l, ip_r;
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if (left->ms.sym == right->ms.sym)
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return 0;
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ip_l = left->ms.sym ? left->ms.sym->start : left->ip;
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ip_r = right->ms.sym ? right->ms.sym->start : right->ip;
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return (int64_t)(ip_r - ip_l);
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}
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static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width __used)
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{
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size_t ret = 0;
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if (verbose) {
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char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
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ret += repsep_snprintf(bf, size, "%#018llx %c ", self->ip, o);
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}
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ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level);
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if (self->ms.sym)
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ret += repsep_snprintf(bf + ret, size - ret, "%s",
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self->ms.sym->name);
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else
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ret += repsep_snprintf(bf + ret, size - ret, "%#016llx", self->ip);
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return ret;
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}
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/* --sort comm */
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int64_t
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sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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return right->thread->pid - left->thread->pid;
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}
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int64_t
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sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
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{
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char *comm_l = left->thread->comm;
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char *comm_r = right->thread->comm;
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if (!comm_l || !comm_r)
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return cmp_null(comm_l, comm_r);
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return strcmp(comm_l, comm_r);
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}
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/* --sort parent */
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int64_t
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sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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struct symbol *sym_l = left->parent;
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struct symbol *sym_r = right->parent;
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if (!sym_l || !sym_r)
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return cmp_null(sym_l, sym_r);
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return strcmp(sym_l->name, sym_r->name);
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}
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static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
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size_t size, unsigned int width)
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{
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return repsep_snprintf(bf, size, "%-*s", width,
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self->parent ? self->parent->name : "[other]");
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}
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int sort_dimension__add(const char *tok)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
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struct sort_dimension *sd = &sort_dimensions[i];
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if (sd->taken)
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continue;
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if (strncasecmp(tok, sd->name, strlen(tok)))
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continue;
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if (sd->entry->se_collapse)
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sort__need_collapse = 1;
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if (sd->entry == &sort_parent) {
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int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
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if (ret) {
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char err[BUFSIZ];
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regerror(ret, &parent_regex, err, sizeof(err));
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pr_err("Invalid regex: %s\n%s", parent_pattern, err);
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return -EINVAL;
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}
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sort__has_parent = 1;
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}
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if (list_empty(&hist_entry__sort_list)) {
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if (!strcmp(sd->name, "pid"))
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sort__first_dimension = SORT_PID;
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else if (!strcmp(sd->name, "comm"))
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sort__first_dimension = SORT_COMM;
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else if (!strcmp(sd->name, "dso"))
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sort__first_dimension = SORT_DSO;
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else if (!strcmp(sd->name, "symbol"))
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sort__first_dimension = SORT_SYM;
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else if (!strcmp(sd->name, "parent"))
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sort__first_dimension = SORT_PARENT;
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}
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list_add_tail(&sd->entry->list, &hist_entry__sort_list);
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sd->taken = 1;
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return 0;
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}
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return -ESRCH;
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}
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void setup_sorting(const char * const usagestr[], const struct option *opts)
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{
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char *tmp, *tok, *str = strdup(sort_order);
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for (tok = strtok_r(str, ", ", &tmp);
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tok; tok = strtok_r(NULL, ", ", &tmp)) {
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if (sort_dimension__add(tok) < 0) {
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error("Unknown --sort key: `%s'", tok);
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usage_with_options(usagestr, opts);
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}
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}
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free(str);
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}
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void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
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const char *list_name, FILE *fp)
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{
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if (list && strlist__nr_entries(list) == 1) {
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if (fp != NULL)
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fprintf(fp, "# %s: %s\n", list_name,
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strlist__entry(list, 0)->s);
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self->elide = true;
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}
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}
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