DTSendSignalFlag() does not work for non-administrator users

Originator:google.j
Number:rdar://15561526 Date Originated:2013-11-30
Status:Open Resolved:
Product:Developer Tools Product Version:
Classification:UI/Usability Reproducible:Always
 
Summary:
In general, developer tools work well in non-administrator accounts. However, one small exception is the DTSendSignalFlag() macro in DTPerformanceSession.framework, which has no effect for non-administrators.

Steps to Reproduce:
1. As a non-administrator user, run a the attached program “flagtest” under Instruments. (See attached flagtest.zip)
2. In Instruments, select “Manage Flags…” from the “Window” menu.

Expected Results:
The flag posted by the test program (“From: se.ayton.jens.test [point]”) should show up in the window

Actual Results:
The window is empty.

Version:
Xcode 5.0.2 (5A3005)
Mac OS X 10.9/13A603

Notes:
A simple fix for this is to insert asl_set(tracermsg,ASL_KEY_READ_UID,"-1"); at an appropriate point in the macro. Presumably calling getuid() and stringifying it would also work.

Configuration:

Comments

Test code

#import <Foundation/Foundation.h>
#import <DTPerformanceSession/DTSignalFlag.h>


int main(int argc, const char * argv[])
{
    @autoreleasepool {
        DTSendSignalFlag("se.ayton.jens.test", DT_POINT_SIGNAL, NO);

        // insert code here...
        NSLog(@"Hello, World!");
    }
    return 0;
}
By google.j at Nov. 30, 2013, 11:12 p.m. (reply...)

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