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Bad_alloc exception when using new for a struct c++


Bad_alloc exception when using new for a struct c++

By : Fareha Khan
Date : November 21 2020, 07:01 PM
it fixes the issue I am writing a query processor which allocates large amounts of memory and tries to find matching documents. Whenever I find a match, I create a structure to hold two variables describing the document and add it to a priority queue. Since there is no way of knowing how many times I will do this, I tried creating my structs dynamically using new. When I pop a struct off the priority queue, the queue (STL priority queue implementation) is supposed to call the object's destructor. My struct code has no destructor, so I assume a default destructor is called in that case. , Why are you creating the structure in the following on the heap:
code :


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Unhandled exception at 0x771515ee Microsoft C++ exception: std::bad_alloc at memory location 0x0049f904

Unhandled exception at 0x771515ee Microsoft C++ exception: std::bad_alloc at memory location 0x0049f904


By : user4481744
Date : March 29 2020, 07:55 AM
To fix this issue You are trying to allocate a 4GB block in a 32 bit process. That's not possible. You are limited to somewhere between 2GB and 4GB addressable space, but in reality much less will be available in a single contiguous block.
If you really need such a large block in a single array then you'll want to switch to a 64 bit process. Reconsidering your algorithm is likely to be the best solution.
Unhandled exception at .. Microsoft C++ exception: std::bad_alloc at memory location

Unhandled exception at .. Microsoft C++ exception: std::bad_alloc at memory location


By : Al_Czervik
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I think you actually have algorithm problem. On each iteration you are sorting and leaving only unique elements intemp vector. But with this approach each iteration will add more and more duplicates into vect2. So you should sort and leave only unique elements in vect2 as well. Actually it would be probably better to utilize std::set instead of temp and vect2.
Another suggestion would be to utilize a better storage for uid if it has some sort of fixes-length format, such as GUID.
Unhandled exception at 0x00007FFCA550A839 in Project1.exe: Microsoft C++ exception: std::bad_alloc at memory location 0x

Unhandled exception at 0x00007FFCA550A839 in Project1.exe: Microsoft C++ exception: std::bad_alloc at memory location 0x


By : user3145707
Date : March 29 2020, 07:55 AM
help you fix your problem Change while (horizonaltIter <= height) { to while (horizonaltIter <= width) { and it should work!
Custom exception hierarchy. Dreaded diamond from std::exception and std::bad_alloc

Custom exception hierarchy. Dreaded diamond from std::exception and std::bad_alloc


By : Abdullah Fahad
Date : March 29 2020, 07:55 AM
this will help There is a way to have your extra exception functionality but without having to create another exception hierarchy. I.e. you can throw standard exceptions with your extra bits:
std::Map of int and struct running out of memory (std::Bad_alloc) c++

std::Map of int and struct running out of memory (std::Bad_alloc) c++


By : Utka
Date : March 29 2020, 07:55 AM
wish of those help I have the following in my program
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