Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>If you are just looking for a unified way (without code duplication) to check if allocation was successful or not, please see the last segment of this post.</p> <hr> <p>First of all <code>boost</code> is mainly a library for <code>C++</code>, therefor all of <code>boost</code> can't be used in C.</p> <p>Writing your own Garbage Collector is not easy, especially in a language without true OOP (such as <code>C</code>). There are many implementations of garbage collectors available online, so instead of reinventing the wheel you could check out some of them.</p> <p>If you are not going to use any of them, well.. at least they will provide you with some information regarding how the problem can be solved.</p> <ul> <li><a href="http://www.hpl.hp.com/personal/Hans_Boehm/gc/" rel="nofollow">A garbage collector for C and C++ (Boehm-Demers-Weiser) <strong>[recommended]</strong></a></li> <li><a href="http://developers.sun.com/solaris/articles/libgc.html" rel="nofollow">Using the C/C++ Garbage Collection Library, libgc</a></li> </ul> <hr> <p>Depending on the project size you might be better of using <a href="http://valgrind.org/" rel="nofollow"><code>valgrind</code></a> looking for leaking data and then manage the memory allocation/release by yourself.</p> <p>C has been around for many years, and a lot of developers have managed without a automatic garbage collector. Why shouldn't you be able to do the same?</p> <hr> <h2>Simple error checking on allocation (and abort on error)</h2> <pre><code>#include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; void* safe_alloc_check (void *p, size_t size) { if (p == NULL) { printf ("ERROR: Unable to allocate memory for %lu bytes!", size); exit (-1); } return p; } #define s_malloc(N) safe_alloc_check(malloc(N),N) #define s_calloc(C,N) safe_alloc_check(calloc(C,N),N) #define s_realloc(P,N) safe_alloc_check(realloc(P,N),N) ... int *p = s_malloc (sizeof (int)); </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POMemory handling in c
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USFilip Roséen - refp
    1. USFilip Roséen - refp
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. CO"Boost can't be used for C" -> not entirely true. There are some Boost headers that are designed to be used by either C or C++.
      singulars
      1. PO
      1. USOliver Charlesworth
    2. CO@OliCharlesworth Noted and changed, thanks.
      singulars
      1. PO
      1. USFilip Roséen - refp
    3. COYes I am looking for similar thing in more generalized purpose which can be use in strcuture also. You have mentioned this code specific to my example. But I am planning to write a function So other programmer can call utility function like wrapper kind of thing(appropriate word) because #define will not be much useful as it will be replacing code internally (Saving . But Thanks a lot for giving some guidence.
      singulars
      1. PO
      1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload