core: add new "flush" job mode to cancel all other jobs when queuing a new job

diff --git a/src/core/job.c b/src/core/job.c
index 9cd6ce2..557917a 100644 (file)
--- a/src/core/job.c
+++ b/src/core/job.c
@@ -1107,7 +1107,8 @@ static const char* const job_mode_table[_JOB_MODE_MAX] = {
         [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly",
         [JOB_ISOLATE] = "isolate",
         [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies",
-        [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements"
+        [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements",
+        [JOB_FLUSH] = "flush",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);

diff --git a/src/core/job.h b/src/core/job.h
index 3f6357a..c23a380 100644 (file)
--- a/src/core/job.h
+++ b/src/core/job.h
@@ -84,6 +84,7 @@ enum JobMode {
         JOB_REPLACE,             /* Replace an existing conflicting job */
         JOB_REPLACE_IRREVERSIBLY,/* Like JOB_REPLACE + produce irreversible jobs */
         JOB_ISOLATE,             /* Start a unit, and stop all others */
+        JOB_FLUSH,               /* Flush out all other queued jobs when queing this one */
         JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */
         JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */
         _JOB_MODE_MAX,

diff --git a/src/core/transaction.c b/src/core/transaction.c
index e2ff0bd..36e31c4 100644 (file)
--- a/src/core/transaction.c
+++ b/src/core/transaction.c
@@ -578,7 +578,7 @@ static int transaction_apply(Transaction *tr, Manager *m, JobMode mode) {
 
         /* Moves the transaction jobs to the set of active jobs */
 
-        if (mode == JOB_ISOLATE) {
+        if (mode == JOB_ISOLATE || mode == JOB_FLUSH) {
 
                 /* When isolating first kill all installed jobs which
                  * aren't part of the new transaction */