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core: add support for unlabeled LOG sessions

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If the root child requests a LOG service with the label "unlabeled" then
return a LOG session that logs unprefixed messages. This allows a external
test controller to recognize log messages produced by a blessed component.
This commit is contained in:
Emery Hemingway 2020-01-29 12:17:40 +01:00 committed by Christian Helmuth
parent 0181c6025a
commit bbdf181828
1 changed files with 12 additions and 3 deletions
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15
repos/base/src/core/include/log_session_component.h
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@ -28,12 +28,21 @@ namespace Genode {
Session_label const _label;
static Session_label _expand_label(Session_label const &label)
{
if (label == "init -> unlabeled")
return "";
else
return Session_label("[", label, "] ");
}
public:
/**
* Constructor
*/
Log_session_component(Session_label const &label) : _label(label) { }
Log_session_component(Session_label const &label)
: _label(_expand_label(label)) { }
/*****************
@ -53,14 +62,14 @@ namespace Genode {
unsigned from_i = 0;
for (unsigned i = 0; i < len; i++) {
if (string[i] == '\n') {
log("[", _label, "] ", Cstring(string + from_i, i - from_i));
log(_label, Cstring(string + from_i, i - from_i));
from_i = i + 1;
}
}
/* if last character of string was not a line break, add one */
if (from_i < len)
log("[", _label, "] ", Cstring(string + from_i));
log(_label, Cstring(string + from_i));
return len;
}