stack

When writing in C, how can I tell how much stack space is available in memory when I launch a program? How about heap space? How can I tell how much memory is being used during the execution of my program? This is all Win32-specific (not really C-specific, all just OS API): When a thread is created, it gets 1MB stack space by default, by that can be modified in whatever CreateThread API you use. You can peek into the thread information block to find the actual stack info, but even though this is documented, this technique isn't officially supported, see http://en.wikipedia.org/wiki/Win32

I need to do it for a C++ program that needs a lot of stack. I use g++ (included in OS X Lion) to compile it. How could I increase it for my program? From http://developer.apple.com/library/mac/#qa/qa1419/_index.html Using gcc, pass link flags through to ld with -Wl: gcc -Wl,-stack_size -Wl,1000000 foo.c You can use getrlimit / setrlimit - this works on Linux, Mac OS X, and other POSIX-ish operating systems, e.g. #include <sys/resource.h> int main (int argc, char **argv) { const rlim_t kStackSize = 16 * 1024 * 1024; // min stack size = 16 MB struct rlimit rl; int result; result = getrlimit

In case of evaluation of postfix expression , is the associativity always left to right?. If yes, why? If no, why? Yes. See this handy table of C's operators . The postfix operators are: ++ and -- () (function call) [] (array indexing) . (member select) -> (member select) And they are all in the left-to-right precedence group (2) near the top of the table. I guess the "why" is since that's how the language is defined. There are no "natural causes" for these kinds of things, they're human-made you know. 来源： https://stackoverflow.com/questions/21407061/is-left-associativity-only-for-postfix

This is my Stack implementation. class Stack: def __init__(self): self.head = None self.size = 0 def push(self, item): node = Node(item) if not self.head: self.head = node else: node.next = self.head self.head = node self.size += 1 def pop(self): if self.size == 0: raise ValueError('Popping off an empty stack!') item = self.head.val self.head = self.head.next return item def peek(self): if self.size == 0: raise ValueError('Peeking into an empty stack!') return self.head.val def __iter__(self): return self def __next__(self): if self.head: curr = self.head else: raise StopIteration() self.head

I'm developing a multi-threaded app for a Linux embedded platform. At the moment I'm setting the stack size for each thread (via pthread_set_attr) to a fairly large default value. I would like to fine tune that value for each thread to something smaller to reduce my application's memory usage. I could go through the trial and error route of setting each thread's stack size to progressively smaller values until the program crashed, but the application uses ~15 threads each with completely different functionality/attributes so that approach would be extremely time consuming. I would much rather

I am writing a very simple std::stack using vector as its underlying container. I realized that I could replace all the push(), pop() and top() functions with push_back(), pop_back() and back() of the vector container. My questions are: why to use a container adaptor when the controlled use of the underlying container is enough? Why not to use just a deque, vector or list? There will be waste of memory or processing time? When your code says std::stack it's clear to the reader what operations they need on the container... it communicates and documents while enforcing that no other operations

I have two sets of Activities suppose 3 Activities each set, (A1,B1,C1 || A2,B2,C2) I start my App from A1 then -> B1 -> C1 here I want to jump from C1 to -> A2 and at A2 if I press back it should exist the App and not put me back for C1, then from A2 I navigate to -> B2 -> C2. So it is basically I want to change the starting Activity, it is like I have two Apps in one App and when I flip to the second App I have to clear the Activity Stack. Is that possible? Any Ideas? Seems to me you've answered your own question. You wrote: So it is basically I want to change the starting Activity, it is