From 0faa98a0bbf05d63f9385de9d66d1707257ab437 Mon Sep 17 00:00:00 2001 From: Paul Smith Date: Thu, 1 May 2014 09:48:10 -0400 Subject: [SV 42249] Propagate correct rule status results. * remake.c (update_file, update_file_1, check_dep): Return an enum update_status value instead of an int, and keep the highest value we find as we walk the graph so that the ultimate status is correct. * tests/scripts/options/dash-q: Add a test for updating prerequisites. --- remake.c | 75 +++++++++++++++++++++++++++++++++++++++------------------------- 1 file changed, 46 insertions(+), 29 deletions(-) (limited to 'remake.c') diff --git a/remake.c b/remake.c index ff22277..01e83a7 100644 --- a/remake.c +++ b/remake.c @@ -58,10 +58,10 @@ unsigned int commands_started = 0; /* Current value for pruning the scan of the goal chain (toggle 0/1). */ static unsigned int considered; -static int update_file (struct file *file, unsigned int depth); -static int update_file_1 (struct file *file, unsigned int depth); -static int check_dep (struct file *file, unsigned int depth, - FILE_TIMESTAMP this_mtime, int *must_make_ptr); +static enum update_status update_file (struct file *file, unsigned int depth); +static enum update_status update_file_1 (struct file *file, unsigned int depth); +static enum update_status check_dep (struct file *file, unsigned int depth, + FILE_TIMESTAMP this_mtime, int *must_make); static enum update_status touch_file (struct file *file); static void remake_file (struct file *file); static FILE_TIMESTAMP name_mtime (const char *name); @@ -130,7 +130,7 @@ update_goal_chain (struct dep *goals) file = file->prev) { unsigned int ocommands_started; - int fail; + enum update_status fail; file->dontcare = g->dontcare; @@ -161,14 +161,12 @@ update_goal_chain (struct dep *goals) if (commands_started > ocommands_started) g->changed = 1; - /* If we updated a file and STATUS was not already 1, set it to - 1 if updating failed, or to 0 if updating succeeded. Leave - STATUS as it is if no updating was done. */ - stop = 0; if ((fail || file->updated) && status < us_question) { - if (file->update_status != us_success) + /* We updated this goal. Update STATUS and decide whether + to stop. */ + if (file->update_status) { /* Updating failed, or -q triggered. The STATUS value tells our caller which. */ @@ -282,11 +280,11 @@ update_goal_chain (struct dep *goals) If there are multiple double-colon entries for FILE, each is considered in turn. */ -static int +static enum update_status update_file (struct file *file, unsigned int depth) { - int status = 0; - register struct file *f; + enum update_status status = us_success; + struct file *f; f = file->double_colon ? file->double_colon : file; @@ -311,26 +309,31 @@ update_file (struct file *file, unsigned int depth) the chain is exhausted. */ for (; f != 0; f = f->prev) { + enum update_status new; + f->considered = considered; - status |= update_file_1 (f, depth); + new = update_file_1 (f, depth); check_renamed (f); /* Clean up any alloca() used during the update. */ alloca (0); /* If we got an error, don't bother with double_colon etc. */ - if (status != 0 && !keep_going_flag) - return status; + if (new && !keep_going_flag) + return new; if (f->command_state == cs_running || f->command_state == cs_deps_running) { /* Don't run the other :: rules for this file until this rule is finished. */ - status = 0; + status = us_success; break; } + + if (new > status) + status = new; } /* Process the remaining rules in the double colon chain so they're marked @@ -343,7 +346,11 @@ update_file (struct file *file, unsigned int depth) f->considered = considered; for (d = f->deps; d != 0; d = d->next) - status |= update_file (d->file, depth + 1); + { + enum update_status new = update_file (d->file, depth + 1); + if (new > status) + new = status; + } } return status; @@ -405,12 +412,12 @@ complain (struct file *file) /* Consider a single 'struct file' and update it as appropriate. Return 0 on success, or non-0 on failure. */ -static int +static enum update_status update_file_1 (struct file *file, unsigned int depth) { + enum update_status dep_status = us_success; FILE_TIMESTAMP this_mtime; int noexist, must_make, deps_changed; - int dep_status = 0; struct file *ofile; struct dep *d, *ad; struct dep amake; @@ -528,6 +535,7 @@ update_file_1 (struct file *file, unsigned int depth) while (d) { + enum update_status new; FILE_TIMESTAMP mtime; int maybe_make; int dontcare = 0; @@ -562,7 +570,9 @@ update_file_1 (struct file *file, unsigned int depth) d->file->dontcare = file->dontcare; } - dep_status |= check_dep (d->file, depth, this_mtime, &maybe_make); + new = check_dep (d->file, depth, this_mtime, &maybe_make); + if (new > dep_status) + dep_status = new; /* Restore original dontcare flag. */ if (rebuilding_makefiles) @@ -608,6 +618,7 @@ update_file_1 (struct file *file, unsigned int depth) for (d = file->deps; d != 0; d = d->next) if (d->file->intermediate) { + enum update_status new; int dontcare = 0; FILE_TIMESTAMP mtime = file_mtime (d->file); @@ -626,7 +637,9 @@ update_file_1 (struct file *file, unsigned int depth) not prune it. */ d->file->considered = !considered; - dep_status |= update_file (d->file, depth); + new = update_file (d->file, depth); + if (new > dep_status) + dep_status = new; /* Restore original dontcare flag. */ if (rebuilding_makefiles) @@ -671,9 +684,10 @@ update_file_1 (struct file *file, unsigned int depth) /* If any dependency failed, give up now. */ - if (dep_status != 0) + if (dep_status) { - file->update_status = us_failed; + /* I'm not sure if we can't just assign dep_status... */ + file->update_status = dep_status == us_none ? us_failed : dep_status; notice_finished_file (file); --depth; @@ -988,13 +1002,13 @@ notice_finished_file (struct file *file) FILE depends on (including FILE itself). Return nonzero if any updating failed. */ -static int +static enum update_status check_dep (struct file *file, unsigned int depth, FILE_TIMESTAMP this_mtime, int *must_make_ptr) { struct file *ofile; struct dep *d; - int dep_status = 0; + enum update_status dep_status = us_success; ++depth; start_updating (file); @@ -1067,6 +1081,7 @@ check_dep (struct file *file, unsigned int depth, d = file->deps; while (d != 0) { + enum update_status new; int maybe_make; if (is_updating (d->file)) @@ -1090,12 +1105,14 @@ check_dep (struct file *file, unsigned int depth, d->file->parent = file; maybe_make = *must_make_ptr; - dep_status |= check_dep (d->file, depth, this_mtime, - &maybe_make); + new = check_dep (d->file, depth, this_mtime, &maybe_make); + if (new > dep_status) + dep_status = new; + if (! d->ignore_mtime) *must_make_ptr = maybe_make; check_renamed (d->file); - if (dep_status != 0 && !keep_going_flag) + if (dep_status && !keep_going_flag) break; if (d->file->command_state == cs_running -- cgit v1.2.3