diff options
Diffstat (limited to 'src/ito.h')
-rw-r--r-- | src/ito.h | 63 |
1 files changed, 33 insertions, 30 deletions
@@ -6,11 +6,12 @@ | |||
6 | namespace Bu | 6 | namespace Bu |
7 | { | 7 | { |
8 | /** | 8 | /** |
9 | * Simple thread class. This wraps the basic pthread (posix threads) system in | 9 | * Simple thread class. This wraps the basic pthread (posix threads) |
10 | * an object oriented sort of way. It allows you to create a class with | 10 | * system in an object oriented sort of way. It allows you to create a |
11 | * standard member variables and callable functions that can be run in it's own | 11 | * class with standard member variables and callable functions that can be |
12 | * thread, one per class instance. | 12 | * run in it's own thread, one per class instance. |
13 | *@author Mike Buland | 13 | *@author Mike Buland |
14 | *@ingroup Threading | ||
14 | */ | 15 | */ |
15 | class Ito | 16 | class Ito |
16 | { | 17 | { |
@@ -27,24 +28,26 @@ namespace Bu | |||
27 | 28 | ||
28 | /** | 29 | /** |
29 | * Begin thread execution. This will call the overridden run function, | 30 | * Begin thread execution. This will call the overridden run function, |
30 | * which will simply execute in it's own thread until the function exits, | 31 | * which will simply execute in it's own thread until the function |
31 | * the thread is killed, or the thread is cancelled (optionally). The | 32 | * exits, the thread is killed, or the thread is cancelled (optionally). |
32 | * thread started in this manner has access to all of it's class variables, | 33 | * The thread started in this manner has access to all of it's class |
33 | * but be sure to protect possible multiple-access with ItoMutex objects. | 34 | * variables, but be sure to protect possible multiple-access with |
34 | *@returns True if starting the thread was successful. False if something | 35 | * ItoMutex objects. |
35 | * went wrong and the thread has not started. | 36 | * @returns True if starting the thread was successful. False if |
37 | * something went wrong and the thread has not started. | ||
36 | */ | 38 | */ |
37 | bool start(); | 39 | bool start(); |
38 | 40 | ||
39 | /** | 41 | /** |
40 | * Forcibly kill a thread. This is not generally considered a good thing to | 42 | * Forcibly kill a thread. This is not generally considered a good |
41 | * do, but in those rare cases you need it, it's invaluable. The problem | 43 | * thing to do, but in those rare cases you need it, it's invaluable. |
42 | * with stopping (or killing) a thread is that it stops it the moment you | 44 | * The problem with stopping (or killing) a thread is that it stops it |
43 | * call stop, no matter what it's doing. The object oriented approach to | 45 | * the moment you call stop, no matter what it's doing. The object |
44 | * this will help clean up any class variables that were used, but anything | 46 | * oriented approach to this will help clean up any class variables |
45 | * not managed as a member variable will probably create a memory leak type | 47 | * that were used, but anything not managed as a member variable will |
46 | * of situation. Instead of stop, consider using cancel, which can be | 48 | * probably create a memory leak type of situation. Instead of stop, |
47 | * handled by the running thread in a graceful manner. | 49 | * consider using cancel, which can be handled by the running thread in |
50 | * a graceful manner. | ||
48 | *@returns True if the thread was stopped, false otherwise. When this | 51 | *@returns True if the thread was stopped, false otherwise. When this |
49 | * function returns the thread may not have stopped, to ensure that the | 52 | * function returns the thread may not have stopped, to ensure that the |
50 | * thread has really stopped, call join. | 53 | * thread has really stopped, call join. |
@@ -52,11 +55,11 @@ namespace Bu | |||
52 | bool stop(); | 55 | bool stop(); |
53 | 56 | ||
54 | /** | 57 | /** |
55 | * The workhorse of the Ito class. This is the function that will run in | 58 | * The workhorse of the Ito class. This is the function that will run |
56 | * the thread, when this function exits the thread dies and is cleaned up | 59 | * in the thread, when this function exits the thread dies and is |
57 | * by the system. Make sure to read up on ItoMutex, ItoCondition, and | 60 | * cleaned up by the system. Make sure to read up on ItoMutex, |
58 | * cancel to see how to control and protect everything you do in a safe way | 61 | * ItoCondition, and cancel to see how to control and protect |
59 | * within this function. | 62 | * everything you do in a safe way within this function. |
60 | *@returns I'm not sure right now, but this is the posix standard form. | 63 | *@returns I'm not sure right now, but this is the posix standard form. |
61 | */ | 64 | */ |
62 | virtual void *run()=0; | 65 | virtual void *run()=0; |
@@ -64,13 +67,13 @@ namespace Bu | |||
64 | /** | 67 | /** |
65 | * Join the thread in action. This function performs what is commonly | 68 | * Join the thread in action. This function performs what is commonly |
66 | * called a thread join. That is that it effectively makes the calling | 69 | * called a thread join. That is that it effectively makes the calling |
67 | * thread an the Ito thread contained in the called object one in the same, | 70 | * thread an the Ito thread contained in the called object one in the |
68 | * and pauses the calling thread until the called thread exits. That is, | 71 | * same, and pauses the calling thread until the called thread exits. |
69 | * when called from, say, your main(), mythread.join() will not return until | 72 | * That is, when called from, say, your main(), mythread.join() will |
70 | * the thread mythread has exited. This is very handy at the end of | 73 | * not return until the thread mythread has exited. This is very handy |
71 | * programs to ensure all of your data was cleaned up. | 74 | * at the end of programs to ensure all of your data was cleaned up. |
72 | *@returns True if the thread was joined, false if the thread couldn't be | 75 | *@returns True if the thread was joined, false if the thread couldn't |
73 | * joined, usually because it isn't running to begin with. | 76 | * be joined, usually because it isn't running to begin with. |
74 | */ | 77 | */ |
75 | bool join(); | 78 | bool join(); |
76 | 79 | ||